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Articoli di riviste sul tema "Emergent hydrodynamics"

Autore: Grafiati

Pubblicato: 26 ottobre 2024

Ultima modifica: 31 luglio 2025

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1

Joshi, M. K., F. Kranzl, A. Schuckert, et al. "Observing emergent hydrodynamics in a long-range quantum magnet." Science 376, no. 6594 (2022): 720–24. http://dx.doi.org/10.1126/science.abk2400.

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Identifying universal properties of nonequilibrium quantum states is a major challenge in modern physics. A fascinating prediction is that classical hydrodynamics emerges universally in the evolution of any interacting quantum system. We experimentally probed the quantum dynamics of 51 individually controlled ions, realizing a long-range interacting spin chain. By measuring space-time–resolved correlation functions in an infinite temperature state, we observed a whole family of hydrodynamic universality classes, ranging from normal diffusion to anomalous superdiffusion, that are described by L

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2

Wang, Yuting, Huilan Zhang, Pingping Yang, and Yunqi Wang. "Experimental Study of Overland Flow through Rigid Emergent Vegetation with Different Densities and Location Arrangements." Water 10, no. 11 (2018): 1638. http://dx.doi.org/10.3390/w10111638.

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The effect of vegetation density on overland flow dynamics has been extensively studied, yet fewer investigations have focused on vegetation arrangements with different densities and position features. Flume experiments were conducted to investigate the hydrodynamics of flow through rigid emergent vegetation arranged in combinations with three densities (Dense, Middle, and Sparse) and three positions (summit, backslope, and footslope). This study focused on how spatial variations regulated hydrodynamic parameters from two dimensions: direction along the slope and water depth. The total hydrody

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3

Manna, Raj Kumar, and P. B. Sunil Kumar. "Emergent topological phenomena in active polymeric fluids." Soft Matter 15, no. 3 (2019): 477–86. http://dx.doi.org/10.1039/c8sm01981a.

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4

Zhang, Bokai, Premkumar Leishangthem, Yang Ding, and Xinliang Xu. "An effective and efficient model of the near-field hydrodynamic interactions for active suspensions of bacteria." Proceedings of the National Academy of Sciences 118, no. 28 (2021): e2100145118. http://dx.doi.org/10.1073/pnas.2100145118.

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Near-field hydrodynamic interactions in active fluids are essential to determine many important emergent behaviors observed, but have not been successfully modeled so far. In this work, we propose an effective model capturing the essence of the near-field hydrodynamic interactions through a tensorial coefficient of resistance, validated numerically by a pedagogic model system consisting of an Escherichia coli bacterium and a passive sphere. In a critical test case that studies the scattering angle of the bacterium–sphere pair dynamics, we prove that the near-field hydrodynamics can make a qual

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5

Sáenz, Pedro J., Tudor Cristea-Platon, and John W. M. Bush. "A hydrodynamic analog of Friedel oscillations." Science Advances 6, no. 20 (2020): eaay9234. http://dx.doi.org/10.1126/sciadv.aay9234.

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We present a macroscopic analog of an open quantum system, achieved with a classical pilot-wave system. Friedel oscillations are the angstrom-scale statistical signature of an impurity on a metal surface, concentric circular modulations in the probability density function of the surrounding electron sea. We consider a millimetric drop, propelled by its own wave field along the surface of a vibrating liquid bath, interacting with a submerged circular well. An ensemble of drop trajectories displays a statistical signature in the vicinity of the well that is strikingly similar to Friedel oscillat

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6

LAUGHLIN, R. B. "EMERGENT RELATIVITY." International Journal of Modern Physics A 18, no. 06 (2003): 831–53. http://dx.doi.org/10.1142/s0217751x03014071.

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A possible resolution of the incompatibility of quantum mechanics and general relativity is that the relativity principle is emergent. I show that the central paradox of black holes also occurs at a liquid-vapor critical surface of a bose condensate but is resolved there by the phenomenon of quantum criticality. I propose that real black holes are actually phase boundaries of the vacuum analogous to this, and that the Einstein field equations simply fail at the event horizon the way quantum hydrodynamics fails at a critical surface. This can occur without violating classical general relativity

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7

Maji, Soumen, Prashanth Hanmaiahgari, Ram Balachandar, Jaan Pu, Ana Ricardo, and Rui Ferreira. "A Review on Hydrodynamics of Free Surface Flows in Emergent Vegetated Channels." Water 12, no. 4 (2020): 1218. http://dx.doi.org/10.3390/w12041218.

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This review paper addresses the structure of the mean flow and key turbulence quantities in free-surface flows with emergent vegetation. Emergent vegetation in open channel flow affects turbulence, flow patterns, flow resistance, sediment transport, and morphological changes. The last 15 years have witnessed significant advances in field, laboratory, and numerical investigations of turbulent flows within reaches of different types of emergent vegetation, such as rigid stems, flexible stems, with foliage or without foliage, and combinations of these. The influence of stem diameter, volume fract

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8

Zu, C., F. Machado, B. Ye, et al. "Emergent hydrodynamics in a strongly interacting dipolar spin ensemble." Nature 597, no. 7874 (2021): 45–50. http://dx.doi.org/10.1038/s41586-021-03763-1.

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9

Suh, In-Saeng, Grant J. Mathews, J. Reese Haywood, and N. Q. Lan. "Analysis of the Conformally Flat Approximation for Binary Neutron Star Initial Conditions." Advances in Astronomy 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/6127031.

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The spatially conformally flat approximation (CFA) is a viable method to deduce initial conditions for the subsequent evolution of binary neutron stars employing the full Einstein equations. Here we analyze the viability of the CFA for the general relativistic hydrodynamic initial conditions of binary neutron stars. We illustrate the stability of the conformally flat condition on the hydrodynamics by numerically evolving ~100 quasicircular orbits. We illustrate the use of this approximation for orbiting neutron stars in the quasicircular orbit approximation to demonstrate the equation of state

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10

Cornacchia, Loreta, Geraldene Wharton, Grieg Davies, et al. "Self-organization of river vegetation leads to emergent buffering of river flows and water levels." Proceedings of the Royal Society B: Biological Sciences 287, no. 1931 (2020): 20201147. http://dx.doi.org/10.1098/rspb.2020.1147.

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Global climate change is expected to impact hydrodynamic conditions in stream ecosystems. There is limited understanding of how stream ecosystems interact and possibly adapt to novel hydrodynamic conditions. Combining mathematical modelling with field data, we demonstrate that bio-physical feedback between plant growth and flow redistribution triggers spatial self-organization of in-channel vegetation that buffers for changed hydrological conditions. The interplay of vegetation growth and hydrodynamics results in a spatial separation of the stream into densely vegetated, low-flow zones divided

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11

Maji, Soumen, Debasish Pal, Prashanth R. Hanmaiahgari, and Umesh P. Gupta. "Hydrodynamics and turbulence in emergent and sparsely vegetated open channel flow." Environmental Fluid Mechanics 17, no. 4 (2017): 853–77. http://dx.doi.org/10.1007/s10652-017-9531-2.

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12

PADMANABHAN, T. "THE HYDRODYNAMICS OF ATOMS OF SPACETIME: GRAVITATIONAL FIELD EQUATION IS NAVIER–STOKES EQUATION." International Journal of Modern Physics D 20, no. 14 (2011): 2817–22. http://dx.doi.org/10.1142/s0218271811020603.

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There is considerable evidence to suggest that field equations of gravity have the same conceptual status as the equations of hydrodynamics or elasticity. We add further support to this paradigm by showing that Einstein"s field equations are identical in form to Navier–Stokes equations of hydrodynamics, when projected on to any null surface. In fact, these equations can be obtained directly by extremizing of entropy associated with the deformations of null surfaces thereby providing a completely thermodynamic route to gravitational field equations. Several curious features of this remarkable c

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13

Spencer, Timothy J., Ian Halliday, and Chris M. Care. "A local lattice Boltzmann method for multiple immiscible fluids and dense suspensions of drops." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 369, no. 1944 (2011): 2255–63. http://dx.doi.org/10.1098/rsta.2011.0029.

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The lattice Boltzmann method (LBM) for computational fluid dynamics benefits from a simple, explicit, completely local computational algorithm making it highly efficient. We extend LBM to recover hydrodynamics of multi-component immiscible fluids, while retaining a completely local, explicit and simple algorithm. Hence, no computationally expensive lattice gradients, interaction potentials or curvatures, that use information from neighbouring lattice sites, need to be calculated, which makes the method highly scalable and suitable for high performance parallel computing. The method is analytic

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14

Galbraith, Gemma F., Benjamin J. Cresswell, Mark I. McCormick, Thomas C. Bridge, and Geoffrey P. Jones. "Contrasting hydrodynamic regimes of submerged pinnacle and emergent coral reefs." PLOS ONE 17, no. 8 (2022): e0273092. http://dx.doi.org/10.1371/journal.pone.0273092.

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Hydrodynamics on coral reefs vary with depth, reef morphology and seascape position. Differences in hydrodynamic regimes strongly influence the structure and function of coral reef ecosystems. Submerged coral reefs on steep-sided, conical bathymetric features like seamounts experience enhanced water circulation as a result of interactions between currents and the abrupt physical structure. There may also be similar interactions between smaller pinnacles and regional water currents in offshore locations (crests > 10 m), while shallow reefs (crests <10 m) may be more subject to surface cur

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15

Bastianello, Alvise, Bruno Bertini, Benjamin Doyon, and Romain Vasseur. "Introduction to the Special Issue on Emergent Hydrodynamics in Integrable Many-Body Systems." Journal of Statistical Mechanics: Theory and Experiment 2022, no. 1 (2022): 014001. http://dx.doi.org/10.1088/1742-5468/ac3e6a.

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16

Sasselov, D. D. "Hydrodynamics and Multi-Level Non-LTE Radiative Transfer in Pulsating Atmospheres: Cepheids." International Astronomical Union Colloquium 134 (1993): 329–30. http://dx.doi.org/10.1017/s025292110001438x.

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The atmospheres of classical Cepheids cannot be represented adequately by a sequence of hydrostatic equilibrium atmospheric models (see Sasselov and Lester 1990 and references therein). Observational evidence for shocks is also available at least since Kraft (1956). Both the disequilibrium and the non-linear phenomena affect the emergent spectra and spectral line profiles of the Cepheids. In the lower amplitude variables the effects may be subtle, yet still lead to significant systematic discrepancies.We have developed the code HERMES for time-dependent treatment of hydrodynamics and non-LTE r

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17

Jiang, Shu, Yutong Hua, Mengxing He, Ying-Tien Lin, and Biyun Sheng. "Effect of a Circular Cylinder on Hydrodynamic Characteristics over a Strongly Curved Channel." Sustainability 15, no. 6 (2023): 4890. http://dx.doi.org/10.3390/su15064890.

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Curved channels are one of the most fundamental units of natural or artificial channels, in which there are different kinds of obstacles; these include vegetation patches, bridge piles, electrical tower foundations, etc., which are all present over a channel bend, and can significantly alter the hydrodynamic characteristics of a channel when compared to a bare bed. In this study, laboratory experiments and numerical simulations were combined to investigate the effect of a circular cylinder on the flow characteristics of a 180-degree U-shaped curved channel. Experimental data, including on wate

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18

MacLeod, Morgan, Antonija Oklopčić, Fabienne Nail, and Dion Linssen. "Streams and Bubbles: Tidal Shaping of Hydrodynamic Planetary Outflows." Astrophysical Journal 988, no. 1 (2025): 63. https://doi.org/10.3847/1538-4357/ade0b7.

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Abstract Planets, especially those close to their host stars, lose mass to atmospheric outflows, a process that is thought to shape the bimodal population of gaseous giant and rocky terrestrial exoplanets in close orbits. We model the hydrodynamic escape of planetary atmospheres in idealized, three-dimensional gas dynamic simulations in order to study their emergent morphology. As we vary the simulated system parameters, model outflows show a range of shapes from fast, isotropic outflows bounded by bow shocks to slower motion confined to thin streams. We show that a crucial factor is the role

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19

Shi, Zhengrui, and Sheng Jin. "Numerical Investigation of Hydrodynamics in a U-Shaped Open Channel Confluence Flow with Partially Emergent Rigid Vegetation." Water 14, no. 24 (2022): 4027. http://dx.doi.org/10.3390/w14244027.

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The effects of partially emergent rigid vegetation on the hydrodynamics of a curved open-channel confluence flow were simulated using OpenFOAM. The numerical model using the Volume of Fluid method and the RNG k-ε turbulence model in the Reynolds-averaged Navier–Stokes equations was first validated by existing experimental data with good agreement. Then the characteristics of hydrodynamics were analyzed in aspects of separation zone, water level, streamwise velocities, secondary flows, bed shear stress and flow resistance. Some main conclusions can be drawn from the results. Compared to the non

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20

Horstman, Erik M., Karin R. Bryan, Julia C. Mullarney, and Conrad A. Pilditch. "MODEL VERSUS NATURE: HYDRODYNAMICS IN MANGROVE PNEUMATOPHORES." Coastal Engineering Proceedings, no. 35 (June 23, 2017): 19. http://dx.doi.org/10.9753/icce.v35.management.19.

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Water flows through submerged and emergent vegetation control the transport and deposition of sediment in coastal wetlands. Many past studies into the hydrodynamics of vegetation fields have used idealized vegetation mimics, mostly rigid dowels of uniform height. In this study, a canopy of real mangrove pneumatophores was reconstructed in a flume to quantify flow and turbulence within and above this canopy. At a constant flow forcing, an increase in pneumatophore density, from 71 m-2 to 268 m-2, was found to cause a reduction of the within-canopy flow velocities, whereas the over-canopy flows

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21

Oriti, Daniele, and Xiankai Pang. "Phantom-like dark energy from quantum gravity." Journal of Cosmology and Astroparticle Physics 2021, no. 12 (2021): 040. http://dx.doi.org/10.1088/1475-7516/2021/12/040.

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Abstract We analyse the emergent cosmological dynamics corresponding to the mean field hydrodynamics of quantum gravity condensates, in the group field theory formalism. We focus in particular on the cosmological effects of fundamental interactions, and on the contributions from different quantum geometric modes. The general consequence of such interactions is to produce an accelerated expansion of the universe, which can happen both at early times, after the quantum bounce predicted by the model, and at late times. Our main result is that, while this fails to give a compelling inflationary sc

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22

Ratliff, Daniel J., and Thomas J. Bridges. "Multiphase wavetrains, singular wave interactions and the emergence of the Korteweg–de Vries equation." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 472, no. 2196 (2016): 20160456. http://dx.doi.org/10.1098/rspa.2016.0456.

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Multiphase wavetrains are multiperiodic travelling waves with a set of distinct wavenumbers and distinct frequencies. In conservative systems, such families are associated with the conservation of wave action or other conservation law. At generic points (where the Jacobian of the wave action flux is non-degenerate), modulation of the wavetrain leads to the dispersionless multiphase conservation of wave action. The main result of this paper is that modulation of the multiphase wavetrain, when the Jacobian of the wave action flux vector is singular, morphs the vector-valued conservation law into

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23

Jercher, Alexander F., Daniele Oriti, and Andreas G. A. Pithis. "Emergent cosmology from quantum gravity in the Lorentzian Barrett-Crane tensorial group field theory model." Journal of Cosmology and Astroparticle Physics 2022, no. 01 (2022): 050. http://dx.doi.org/10.1088/1475-7516/2022/01/050.

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Abstract We study the cosmological sector of the Lorentzian Barrett-Crane (BC) model coupled to a free massless scalar field in its Group Field Theory (GFT) formulation, corresponding to the mean-field hydrodynamics obtained from coherent condensate states. The relational evolution of the condensate with respect to the scalar field yields effective dynamics of homogeneous and isotropic cosmologies, similar to those previously obtained in SU(2)-based EPRL-like models. Also in this manifestly Lorentzian setting, in which only continuous SL(2,ℂ)-representations are used, we obtain generalized Fri

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24

Ahmad, Muhammad, Usman Ghani, Naveed Anjum, Ghufran Ahmed Pasha, Muhammad Kaleem Ullah, and Afzal Ahmed. "Investigating the Flow Hydrodynamics in a Compound Channel with Layered Vegetated Floodplains." Civil Engineering Journal 6, no. 5 (2020): 860–76. http://dx.doi.org/10.28991/cej-2020-03091513.

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In natural rivers, vegetation grows on floodplains, generating complex velocity field within the compound channel. The efficient modelling of the flow hydraulics in a compound channel with vegetated floodplains is necessary to understand and determine the natural processes in rivers and streams. As the three dimensional (3D) flow features are difficult to capture through experimental investigation; therefore, the present numerical study was carried out to investigate the complex 3D flow structures with the vertically layered vegetation placed over the floodplains in a symmetric trapezoidal com

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25

Liu, Bangquan, Zhen Liu, Dechao Sun, and Chunyue Bi. "An Evacuation Route Model of Crowd Based on Emotion and Geodesic." Mathematical Problems in Engineering 2018 (October 1, 2018): 1–10. http://dx.doi.org/10.1155/2018/5397071.

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Making unconventional emergent plan for dense crowd is one of the critical issues of evacuation simulations. In order to make the behavior of crowd more believable, we present a real-time evacuation route approach based on emotion and geodesic under the influence of individual emotion and multi-hazard circumstances. The proposed emotion model can reflect the dynamic process of individual in group on three factors: individual emotion, perilous field, and crowd emotion. Specifically, we first convert the evacuation scene to Delaunay triangulation representations. Then, we use the optimization-dr

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26

Kumar, Rakesh, Prabhakar Sharma, Anurag Verma, et al. "Effect of Physical Characteristics and Hydrodynamic Conditions on Transport and Deposition of Microplastics in Riverine Ecosystem." Water 13, no. 19 (2021): 2710. http://dx.doi.org/10.3390/w13192710.

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Microplastic disposal into riverine ecosystems is an emergent ecological hazard that mainly originated from land-based sources. This paper presents a comprehensive review on physical processes involved in microplastics transport in riverine ecosystems. Microplastic transport is governed by physical characteristics (e.g., plastic particle density, shape, and size) and hydrodynamics (e.g., laminar and turbulent flow conditions). High-density microplastics are likely to prevail near riverbeds, whereas low-density particles float over river surfaces. Microplastic transport occurs either due to gra

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27

Liu, Mengyang, Zhonghua Yang, Bin Ji, Wenxin Huai, and Hongwu Tang. "Flow dynamics in lateral vegetation cavities constructed by an array of emergent vegetation patches along the open-channel bank." Physics of Fluids 34, no. 3 (2022): 035122. http://dx.doi.org/10.1063/5.0084287.

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The hydrodynamics in a straight rectangular open channel containing novel lateral cavities constructed by an array of square emergent vegetation patches discontinuously distributed along the bank were explored numerically using three-dimensional large eddy simulations (LES). Five vegetation densities (Φ), ranging from 0.02 to 0.25, as well as the traditional lateral cavities created by impermeable solid media, were tested. The effects of the cavity aspect ratio (AR) were also examined. The LES results showed that the mean recirculation pattern inside the vegetation cavities and coherent struct

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28

ZHAO, XIANGGUI, ROY R. GU, CHULING GUO, KUI WANG, and SHIJIE LI. "SIMULATIONS OF FLOW CIRCULATIONS AND ATRAZINE CONCENTRATIONS IN A MIDWEST U.S. RESERVOIR." International Journal of Modern Physics: Conference Series 19 (January 2012): 27–38. http://dx.doi.org/10.1142/s2010194512008562.

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Atrazine is the most commonly used herbicide in the spring for pre-emergent weed control in the corn cropping area in the Midwestern United States. A frequent high level of herbicide concentrations in reservoirs is a great concern for public health and aquatic ecosystems. In this study, a two-dimensional hydrodynamics and toxic contaminant transport model was applied to Saylorville Reservoir, Iowa, USA. The model simulates physical, chemical, and biological processes and predicts unsteady vertical and longitudinal distributions of a toxic chemical. Model results were validated by measured temp

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29

Tsang, Boyce, Zachary E. Dell, Lingxiang Jiang, Kenneth S. Schweizer, and Steve Granick. "Dynamic cross-correlations between entangled biofilaments as they diffuse." Proceedings of the National Academy of Sciences 114, no. 13 (2017): 3322–27. http://dx.doi.org/10.1073/pnas.1620935114.

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Entanglement in polymer and biological physics involves a state in which linear interthreaded macromolecules in isotropic liquids diffuse in a spatially anisotropic manner beyond a characteristic mesoscopic time and length scale (tube diameter). The physical reason is that linear macromolecules become transiently localized in directions transverse to their backbone but diffuse with relative ease parallel to it. Within the resulting broad spectrum of relaxation times there is an extended period before the longest relaxation time when filaments occupy a time-averaged cylindrical space of near-co

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Occhipinti-Ambrogi, Anna, and Bella Galil. "Marine alien species as an aspect of global change." Advances in Oceanography and Limnology 1, no. 1 (2010): 199. http://dx.doi.org/10.4081/aiol.2010.5300.

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The transport of organisms across oceans is an anthropogenic agent of global change that has profoundly affected the natural distribution of littoral biota and altered the makeup of biogeographic regions. The homogenization of marine biotas is a phenomenon especially affecting coastal regions and is spearheaded by a suite of opportunistic species at the expense of native species. Climate change may exacerbate the trend: sea surface temperatures, hydrodynamics, pH and carbonate cycles, already show marked fluctuations compared to the past. Alien invasive species are impacted by the change of ma

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Granet, Etienne. "Wavelet representation of hardcore bosons." Journal of Statistical Mechanics: Theory and Experiment 2023, no. 12 (2023): 123102. http://dx.doi.org/10.1088/1742-5468/ad082c.

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Abstract We consider the one-dimensional Tonks–Girardeau gas with a space-dependent potential out of equilibrium. We derive the exact dynamics of the system when divided into n boxes and decomposed into energy eigenstates within each box. It is a representation of the wave function that is a mixture between real space and momentum space, with basis elements consisting of plane waves localized in a box, giving rise to the term ‘wavelet’. Using this representation, we derive the emergence of generalized hydrodynamics in appropriate limits without assuming local relaxation. We emphasize that a ge

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Sáenz, Pedro J., Giuseppe Pucci, Sam E. Turton, et al. "Emergent order in hydrodynamic spin lattices." Nature 596, no. 7870 (2021): 58–62. http://dx.doi.org/10.1038/s41586-021-03682-1.

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Martinez-Pedrero, Fernando, Eloy Navarro-Argemí, Antonio Ortiz-Ambriz, Ignacio Pagonabarraga, and Pietro Tierno. "Emergent hydrodynamic bound states between magnetically powered micropropellers." Science Advances 4, no. 1 (2018): eaap9379. http://dx.doi.org/10.1126/sciadv.aap9379.

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Klein, Richard I., and Jonathan Arons. "Radiation Gas Dynamics of Polar Cap Accretion onto Magnetized Neutron Stars." Symposium - International Astronomical Union 125 (1987): 246. http://dx.doi.org/10.1017/s0074180900160826.

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We present results of the first self-consistent, time-dependent, 2-D calculations of the accretion of plasma onto polar caps of high luminosity (L*>1036erg-s−1) magnetized neutron stars. We follow the temporal and spatial evolution of three fluids, electrons, ions and photons in a superstrong (B=3×1012 Gauss) dipole magnetic field where radiation pressure dominates plasma pressure by solving coupled 2-D equations of radiation hydrodynamics. We have included several physical processes in the radiation-plasma coupling in superstrong magnetic fields (Klein, et al., 1984, Santa Cruz Workshop on

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Parmigiani, Andrea, Paolo Roberto Di Palma, Sébastien Leclaire, Faraz Habib, and Xiang-Zhao Kong. "Characterization of Transport-Enhanced Phase Separation in Porous Media Using a Lattice-Boltzmann Method." Geofluids 2019 (May 14, 2019): 1–13. http://dx.doi.org/10.1155/2019/5176410.

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Phase separation of formation fluids in the subsurface introduces hydrodynamic perturbations which are critical for mass and energy transport of geofluids. Here, we present pore-scale lattice-Boltzmann simulations to investigate the hydrodynamical response of a porous system to the emergence of non-wetting droplets under background hydraulic gradients. A wide parameter space of capillary number and fluid saturation is explored to characterize the droplet evolution, the droplet size and shape distribution, and the capillary-clogging patterns. We find that clogging is favored by high capillary s

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Blaizot, J. P. "Emergence of Hydrodynamics in Expanding Relativistic Plasmas." Acta Physica Polonica B Proceedings Supplement 16, no. 8 (2023): 1. http://dx.doi.org/10.5506/aphyspolbsupp.16.8-a7.

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Thijssen, Kristian, Luuk Metselaar, Julia M. Yeomans, and Amin Doostmohammadi. "Active nematics with anisotropic friction: the decisive role of the flow aligning parameter." Soft Matter 16, no. 8 (2020): 2065–74. http://dx.doi.org/10.1039/c9sm01963d.

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Doyon, Benjamin. "Hydrodynamic Projections and the Emergence of Linearised Euler Equations in One-Dimensional Isolated Systems." Communications in Mathematical Physics 391, no. 1 (2022): 293–356. http://dx.doi.org/10.1007/s00220-022-04310-3.

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AbstractOne of the most profound questions of mathematical physics is that of establishing from first principles the hydrodynamic equations in large, isolated, strongly interacting many-body systems. This involves understanding relaxation at long times under reversible dynamics, determining the space of emergent collective degrees of freedom (the ballistic waves), showing that projection occurs onto them, and establishing their dynamics (the hydrodynamic equations). We make progress in these directions, focussing for simplicity on one-dimensional systems. Under a model-independent definition o

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Davison, Richard, and Luca V. Delacrétaz. "Universal thermalization dynamics in (1+1)d QFTs." SciPost Physics 18, no. 6 (2025). https://doi.org/10.21468/scipostphys.18.6.177.

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We identify the universal mechanism behind the thermalization of (1+1)d QFTs at high and low temperatures. Viewing these theories as CFTs perturbed by relevant or irrelevant deformations, we show that conformal perturbation theory in the thermal state breaks down at late times allowing for the emergence of hydrodynamics. This breakdown occurs universally due to the unsuppressed exchange of stress tensors near the lightcone. Furthermore, for theories with central charge c→∞c→∞ we solve for the emergent hydrodynamic theory to all orders in the gradient expansion by arguing that all transport par

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40

Zantop, Arne Wolf, and Holger Stark. "Emergent collective dynamics of pusher and puller squirmer rods: Swarming, clustering and turbulence." Soft Matter, 2022. http://dx.doi.org/10.1039/d2sm00449f.

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We study the interplay of steric and hydrodynamic interactions in suspensions of elongated microswimmers by simulating the full hydrodynamics of squirmer rods in the quasi two-dimensional geometry of a Hele-Shaw...

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41

De Nardis, Jacopo, та Benjamin Doyon. "Hydrodynamic gauge ﬁxing and higher order hydrodynamic expansion". Journal of Physics A: Mathematical and Theoretical, 28 квітня 2023. http://dx.doi.org/10.1088/1751-8121/acd153.

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Abstract Hydrodynamics is a powerful emergent theory for the large-scale behaviours in many-body systems, quantum or classical. It is a gradient series expansion, where different orders of spatial derivatives provide an &#xD;effective description on different length scales. We report the first fully general derivation of third-order, or ``dispersive", terms in the hydrodynamic expansion. Our derivation is based on general principles of statistical mechanics, along with the assumption that the complete set of local and quasi-local conserved densities constitutes a good set of emergent degre

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42

Delacrétaz, Luca, Diego Hofman, and Grégoire Mathys. "Superfluids as higher-form anomalies." SciPost Physics 8, no. 3 (2020). http://dx.doi.org/10.21468/scipostphys.8.3.047.

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We recast superfluid hydrodynamics as the hydrodynamic theory of a system with an emergent anomalous higher-form symmetry. The higher-form charge counts the winding planes of the superfluid - its constitutive relation replaces the Josephson relation of conventional superfluid hydrodynamics. This formulation puts all hydrodynamic equations on equal footing. The anomalous Ward identity can be used as an alternative starting point to prove the existence of a Goldstone boson, without reference to spontaneous symmetry breaking. This provides an alternative characterization of Landau phase transitio

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43

Dash, Ashutosh, and Amaresh Jaiswal. "Metric anisotropies and emergent anisotropic hydrodynamics." Physical Review D 97, no. 10 (2018). http://dx.doi.org/10.1103/physrevd.97.104005.

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44

Ye, Bingtian, Francisco Machado, Christopher David White, Roger S. K. Mong, and Norman Y. Yao. "Emergent Hydrodynamics in Nonequilibrium Quantum Systems." Physical Review Letters 125, no. 3 (2020). http://dx.doi.org/10.1103/physrevlett.125.030601.

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45

Wienand, Julian F., Simon Karch, Alexander Impertro, et al. "Emergence of fluctuating hydrodynamics in chaotic quantum systems." Nature Physics, August 12, 2024. http://dx.doi.org/10.1038/s41567-024-02611-z.

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AbstractA fundamental principle of chaotic quantum dynamics is that local subsystems eventually approach a thermal equilibrium state. The corresponding timescales increase with subsystem size as equilibration is limited by the hydrodynamic build-up of fluctuations on extended length scales. We perform large-scale quantum simulations that monitor particle-number fluctuations in tunable ladders of hard-core bosons and explore how the build-up of fluctuations changes as the system crosses over from integrable to fully chaotic dynamics. Our results indicate that the growth of large-scale fluctuati

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46

Wu, Ning, Matteo Baggioli, and Wei-Jia Li. "On the universality of AdS2 diffusion bounds and the breakdown of linearized hydrodynamics." Journal of High Energy Physics 2021, no. 5 (2021). http://dx.doi.org/10.1007/jhep05(2021)014.

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Abstract The chase of universal bounds on diffusivities in strongly coupled systems and holographic models has a long track record. The identification of a universal velocity scale, independent of the presence of well-defined quasiparticle excitations, is one of the major challenges of this program. A recent analysis, valid for emergent IR fixed points exhibiting local quantum criticality, and dual to IR AdS2 geometries, suggests to identify such a velocity using the time and length scales at which hydrodynamics breaks down — the equilibration velocity. The latter relates to the radius of conv

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47

Buzzegoli, Matteo, and Andrea Palermo. "Emergent Canonical Spin Tensor in the Chiral-Symmetric Hot QCD." Physical Review Letters 133, no. 26 (2024). https://doi.org/10.1103/physrevlett.133.262301.

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The spin tensor is fundamental to relativistic spin hydrodynamics, but its definition is ambiguous due to the pseudogauge symmetry. We show that this ambiguity can be solved in interacting field theories. We prove that the mean-field limit of a modified Nambu-Jona-Lasinio model with spin-spin interactions is equivalent to nondissipative spin hydrodynamics with a canonical spin tensor. Published by the American Physical Society 2024

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48

Upadhyaya, N., L. R. Gómez, and V. Vitelli. "Soliton Attenuation and Emergent Hydrodynamics in Fragile Matter." Physical Review X 4, no. 1 (2014). http://dx.doi.org/10.1103/physrevx.4.011045.

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49

Łebek, Maciej, and Miłosz Panfil. "Chapman-Enskog theory and crossover between diffusion and superdiffusion for nearly integrable quantum gases." SciPost Physics 18, no. 6 (2025). https://doi.org/10.21468/scipostphys.18.6.186.

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Abstract (sommario):

Integrable systems feature an infinite number of conserved charges and on hydrodynamic scales are described by generalised hydrodynamics (GHD). This description breaks down when the integrability is weakly broken and sufficiently large space-time-scales are probed. The emergent hydrodynamics depends then on the charges conserved by the perturbation. We focus on nearly-integrable Galilean-invariant systems with conserved particle number, momentum and energy. Basing on the Boltzmann approach to integrability-breaking we describe dynamics of the system with GHD equation supplemented with a collis

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50

Galbraith, Gemma F., Benjamin J. Cresswell, Mark I. McCormick, and Geoffrey P. Jones. "Strong hydrodynamic drivers of coral reef fish biodiversity on submerged pinnacle coral reefs." Limnology and Oceanography, September 25, 2023. http://dx.doi.org/10.1002/lno.12431.

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AbstractHydrodynamic processes are important in all marine environments and on coral reefs drive patterns of habitat zonation, community structure, and biodiversity. Abrupt geomorphological features like pinnacles and seamounts often possess distinct localized currents and these habitats are also often characterized by high abundance and biomass of fishes. However, differences in fish community structure between pinnacles and emergent reefs, and their key drivers are poorly understood. In this study, we compared fish communities among emergent fringing and offshore coral reefs, and submerged p

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