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Статті в журналах з теми "Bosonic mixtures"
Alon, Ofir E. "Fragmentation of Identical and Distinguishable Bosons’ Pairs and Natural Geminals of a Trapped Bosonic Mixture." Atoms 9, no. 4 (November 2, 2021): 92. http://dx.doi.org/10.3390/atoms9040092.
Повний текст джерелаBuonsante, P., S. M. Giampaolo, F. Illuminati, V. Penna, and A. Vezzani. "Unconventional quantum phases in lattice bosonic mixtures." European Physical Journal B 68, no. 3 (February 18, 2009): 427–33. http://dx.doi.org/10.1140/epjb/e2009-00056-0.
Повний текст джерелаSouza, Valéria de C., Zochil González Arenas, Daniel G. Barci, and Cesar A. Linhares. "Bosonic binary mixtures with Josephson-type interactions." Physica A: Statistical Mechanics and its Applications 450 (May 2016): 134–47. http://dx.doi.org/10.1016/j.physa.2015.12.146.
Повний текст джерелаPenna, Vittorio, Alessandra Contestabile, and Andrea Richaud. "Ground-State Properties and Phase Separation of Binary Mixtures in Mesoscopic Ring Lattices." Entropy 23, no. 7 (June 28, 2021): 821. http://dx.doi.org/10.3390/e23070821.
Повний текст джерелаGarcía-March, M. A., B. Juliá-Díaz, G. E. Astrakharchik, Th Busch, J. Boronat, and A. Polls. "Quantum correlations and spatial localization in one-dimensional ultracold bosonic mixtures." New Journal of Physics 16, no. 10 (October 8, 2014): 103004. http://dx.doi.org/10.1088/1367-2630/16/10/103004.
Повний текст джерелаGorbar, E. V., Y. O. Nikolaieva, I. V. Oleinikova, S. I. Vilchinskii, and A. I. Yakimenko. "s- and p-superfluidity of Fermi atoms in Bose–Fermi mixtures." Low Temperature Physics 48, no. 9 (September 2022): 660–66. http://dx.doi.org/10.1063/10.0013278.
Повний текст джерелаBarman, Apurba, and Saurabh Basu. "Phase diagram of multi-component bosonic mixtures: emergence of mixed superfluid and insulating phases." Journal of Physics B: Atomic, Molecular and Optical Physics 48, no. 5 (January 30, 2015): 055301. http://dx.doi.org/10.1088/0953-4075/48/5/055301.
Повний текст джерелаAlon, Ofir E. "Solvable Model of a Generic Driven Mixture of Trapped Bose–Einstein Condensates and Properties of a Many-Boson Floquet State at the Limit of an Infinite Number of Particles." Entropy 22, no. 12 (November 26, 2020): 1342. http://dx.doi.org/10.3390/e22121342.
Повний текст джерелаNisperuza, J., J. P. Rubio, and R. Avella. "Density probabilities of a Bose-Fermi mixture in 1D double well potential." Journal of Physics Communications 6, no. 2 (February 1, 2022): 025004. http://dx.doi.org/10.1088/2399-6528/ac4faf.
Повний текст джерелаScazza, Francesco, Matteo Zaccanti, Pietro Massignan, Meera M. Parish, and Jesper Levinsen. "Repulsive Fermi and Bose Polarons in Quantum Gases." Atoms 10, no. 2 (May 27, 2022): 55. http://dx.doi.org/10.3390/atoms10020055.
Повний текст джерелаДисертації з теми "Bosonic mixtures"
Albus, Alexander. "Mixtures of Bosonic and Fermionic atoms." Phd thesis, Universität Potsdam, 2003. http://opus.kobv.de/ubp/volltexte/2005/98/.
Повний текст джерелаZuerst wurde der Formalismus der Quantenfeldtheorie auf homogene, atomare Boson-Fermion Gemische erweitert, um grundlegende Größen wie Quasiteilchenspektren, die Grundzustandsenergie und daraus abgeleitete Größen über die Molekularfeldtheorie hinaus zu berechnen.
Unter Zuhilfenahme der dieser Resultate System wurde ein Boson-Fermion Gemisch in einem Fallenpotential im Rahmen der Dichtefunktionaltheorie beschrieben. Daraus konnten die Dichteprofile ermittelt werden und es ließen sich drei Bereiche im Phasendiagramm identifizieren:
(i) ein Bereich eines stabilen Gemisches,
(ii) ein Bereich, in dem die Spezies entmischt sind und
(iii) ein Bereich, in dem das System kollabiert.
Im letzten dieser drei Fällen waren Austausch--Korrelationseffekte signifikant. Weiterhin wurde die Änderung der kritischen Temperatur der Bose-Einstein-Kondensation aufgrund der Boson-Fermion-Wechselwirkung berechnet. Verursacht wird dieser Effekt von Dichtumverteilungen aufgrund der Wechselwirkung.
Dann wurden Boson-Fermion Gemische in optischen Gittern betrachtet. Ein Stabilitätskriterium gegen Phasenentmischung wurde gefunden und es ließen sich Bedingungen für einen supraflüssig zu Mott-isolations Phasenübergang angeben. Diese wurden sowohl mittels einer Molekularfeldrechnung als auch numerisch im Rahmen eines Gutzwilleransatzes gefunden. Es wurden weiterhin neuartige frustrierte Grundzustände im Fall von sehr großen Gitterstärken gefunden.
The theory of atomic Boson-Fermion mixtures in the dilute limit beyond mean-field is considered in this thesis.
Extending the formalism of quantum field theory we derived expressions for the quasi-particle excitation spectra, the ground state energy, and related quantities for a homogenous system to first order in the dilute gas parameter.
In the framework of density functional theory we could carry over the previous results to inhomogeneous systems. We then determined to density distributions for various parameter values and identified three different phase regions:
(i) a stable mixed regime,
(ii) a phase separated regime, and
(iii) a collapsed regime.
We found a significant contribution of exchange-correlation effects in the latter case. Next, we determined the shift of the Bose-Einstein condensation temperature caused by Boson-Fermion interactions in a harmonic trap due to redistribution of the density profiles.
We then considered Boson-Fermion mixtures in optical lattices. We calculated the criterion for stability against phase separation, identified the Mott-insulating and superfluid regimes both, analytically within a mean-field calculation, and numerically by virtue of a Gutzwiller Ansatz. We also found new frustrated ground states in the limit of very strong lattices.
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Anmerkung:
Der Autor ist Träger des durch die Physikalische Gesellschaft zu Berlin vergebenen Carl-Ramsauer-Preises 2004 für die jeweils beste Dissertation der vier Universitäten Freie Universität Berlin, Humboldt-Universität zu Berlin, Technische Universität Berlin und Universität Potsdam.
Kimene, Kaya Boniface Dimitri Christel. "Crossovers and phase transitions in Bose-Fermi mixtures." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86471.
Повний текст джерелаENGLISH ABSTRACT: We present a theoretical approach that allows for the description of trapped Bose-Fermi mixtures with a tunable interspecies interaction in the vicinity of a Feshbach resonance magnetic field.The many-body physics of the system is treated at equilibrium using the well-established mean-field and local density approximations. This reduces the physics locally to that of a homogeneous system. We observe a rich local phase structure exhibiting both first and second order phase transitions between the normal and BEC phases. We also consider the global properties of the mixture at a fixed number of particles and investigate how the density profiles and the populations of the various particle species depend on the detuning and trap profile.
AFRIKAANSE OPSOMMING: Ons beskou ’n teoretiese beskrywing van gevangde Bose-Fermi mengsels met ’n verstelbare interspesie wisselwerking in die teenwoordigheid van ’n magneties-geïnduseerde Feshbach resonansie. Die veeldeeltjiefisika van die sisteem word by ekwilibrium binne die welbekende gemiddelde-veld en lokale-digtheid benaderings hanteer. Sodoende word die fisika lokaal tot die van ’n homogene sisteem gereduseer. Ons neem ’n ryk fase-struktuur waar met beide eerste- en tweede-orde fase-oorgange tussen die normale en BEK fases. Ons beskou ook die globale eienskappe van die mengsel by ’n vaste totale aantal deeltjies en ondersoek hoe die digtheidsprofiele en deeltjiegetalle van die afstemming en die profiel van die val afhang.
Ferrier-Barbut, Igor. "Mixtures of Bose and Fermi Superfluids." Thesis, Paris, Ecole normale supérieure, 2014. http://www.theses.fr/2014ENSU0012/document.
Повний текст джерелаManifestations of Quantum Physics at the thermodynamical level are found in a broadrange of physical systems. A famous example is superfluidity, discovered at the beginningof the 20th century and found in many different situations, from liquid helium to neutronstars. Dilute ultracold gases offer a unique versatility to engineer quantum many-bodysystems, which can be directly compared with theory thanks to the controllability of theirenvironment. In this thesis we present several experimental investigations led on ultracoldlithium gases. Lithium provides the possibility to study ensembles of bosons andfermions, with controllable interactions between the constituents. We present experimentaltechniques for preparation and studies of degenerate gases of lithium, with prospects forimprovement of the existing methods. We first report on an investigation of three-bodyrecombination of bosons under a resonant two-body interaction. This study, quantitativelycompared with theory constitutes a benchmark for further studies of the unitary Bose gas.Finally, we present the first experimental realization of a mixture of a Bose superfluid witha Fermi superfluid. We demon- strate that both components are in the superfluid regime,and that the counter-flow motion between them possesses the characteristics of superfluidflow, with the absence of viscosity below a critical velocity, and an onset of friction above.Using collective oscillations of the mixture, we measure the coupling between the twosuperfluids in close agreement with a theoretical model
Sugawa, Seiji. "Strongly Correlated Quantum Phases in Ultracold Mixtures of Bosons and Fermions in an Optical Lattice." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/157745.
Повний текст джерелаHartmann, Torsten [Verfasser]. "An experiment apparatus for the production of ultracold bosonic dipolar ground state 23Na39K molecules and Feshbach spectroscopy in a cold mixture of 23Na and 39K / Torsten Hartmann." Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2019. http://d-nb.info/1183907133/34.
Повний текст джерелаTRAMONTO, FILIPPO. "MICROSCOPIC STUDIES OF STATIC AND DYNAMIC PROPERTIES IN QUANTUM LIQUIDS AND GASES." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/260418.
Повний текст джерелаAlbus, Alexander [Verfasser]. "Mixtures of bosonic and fermionic atoms / Alexander Albus." 2003. http://d-nb.info/971595704/34.
Повний текст джерелаANOSHKIN, KONSTANTIN. "Persistent currents in bosonic mixtures in the ring geometry." Thesis, 2012. http://hdl.handle.net/1974/7037.
Повний текст джерелаThesis (Master, Physics, Engineering Physics and Astronomy) -- Queen's University, 2012-03-27 10:05:21.831
Weber, Claudia [Verfasser]. "Controlled few-body interactions in ultracold bosonic mixtures / vorgelegt Claudia Weber." 2009. http://d-nb.info/1003698921/34.
Повний текст джерелаFrese, Daniel [Verfasser]. "Bose-Einstein condensation of rubidium : ultracold binary bosonic mixtures / vorgelegt von Daniel Frese." 2005. http://d-nb.info/977555577/34.
Повний текст джерелаЧастини книг з теми "Bosonic mixtures"
Kürten, K. E., and M. L. Ristig. "Boson-Mixtures at Non-Zero Temperatures." In Condensed Matter Theories, 211–15. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-0917-8_23.
Повний текст джерелаWill, Sebastian. "Interacting Mixtures of Bosons and Fermions in Optical Lattice Potentials." In From Atom Optics to Quantum Simulation, 193–207. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33633-1_8.
Повний текст джерелаParthasarathy, Harish. "Large deviations for filtering in a mixture of Boson-Fermion noise." In Select Topics in Signal Analysis, 307–16. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003344957-8.
Повний текст джерелаТези доповідей конференцій з теми "Bosonic mixtures"
ROSCILDE, T., B. HORSTMANN, and J. I. CIRAC. "LOCALIZATION AND GLASSINESS OF BOSONIC MIXTURES IN OPTICAL LATTICES." In Proceedings of the 14th International Conference. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812779885_0012.
Повний текст джерелаRÖTHEL, S., and A. PELSTER. "DENSITY AND STABILITY IN ULTRACOLD DILUTE BOSON-FERMION MIXTURES." In Proceedings of the 9th International Conference. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812837271_0062.
Повний текст джерелаKanamoto, Rina, and Makoto Tsubota. "Energy Spectrum of Fermions in a Rotating Boson-Fermion Mixture." In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. AIP, 2006. http://dx.doi.org/10.1063/1.2354606.
Повний текст джерелаKIM, YEONG E., and ALEXANDER L. ZUBAREV. "MIXTURES OF CHARGED BOSONS CONFINED IN HARMONIC TRAPS AND BOSE–EINSTEIN CONDENSATION MECHANISM FOR LOW-ENERGY NUCLEAR REACTIONS AND TRANSMUTATION PROCESSES IN CONDENSED MATTERS." In Proceedings of the 11th International Conference on Cold Fusion. WORLD SCIENTIFIC, 2006. http://dx.doi.org/10.1142/9789812774354_0058.
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