Relevant bibliographies by topics / Big Bang singularity

Academic literature on the topic 'Big Bang singularity'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Big Bang singularity"

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Wainwright, J. "An oscillatory big-bang singularity." Canadian Journal of Physics 64, no. 2 (February 1, 1986): 200–203. http://dx.doi.org/10.1139/p86-035.

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The big-bang singularities in the exact cosmological solutions of the Einstein field equations that have been studied up to now are power asymptotes in the sense that all scalar polynomials in the curvature tensor diverge monotonically as a power of clock time along the fundamental world lines, as the singularity is approached. One can thus regard the solutions as being asymptotically self-similar near the singularity. In this paper, we illustrate a more complicated type of singularity by giving an example of an exact cosmological solution in which the big-bang singularity is of an oscillatory nature, so that the solution is not asymptotically self-similar.
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Wetterich, C. "Crossing the Big Bang singularity." Physics of the Dark Universe 33 (September 2021): 100866. http://dx.doi.org/10.1016/j.dark.2021.100866.

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Afshordi, N., R. B. Mann, and R. Pourhasan. "A holographic big bang?" International Journal of Modern Physics D 24, no. 12 (October 2015): 1544029. http://dx.doi.org/10.1142/s0218271815440290.

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We present a cosmological model in which the Universe emerges out of the collapse of a five-dimensional (5D) star as a spherical three-brane. The initial singularity of the big bang becomes hidden behind a causal horizon. Near scale-invariant primordial curvature perturbations can be induced on the brane via a thermal atmosphere that is in equilibrium with the brane, circumventing the need for a separate inflationary process and providing an important test of the model.
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Sikdar, Malay Kanti. "A Different Approach for Big Bang Singularity." Natural Science 10, no. 04 (2018): 151–62. http://dx.doi.org/10.4236/ns.2018.104016.

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Heller, M., and W. Sasin. "The Big Bang singularity and Penrose tilings." Advances in Space Research 31, no. 2 (January 2003): 443–48. http://dx.doi.org/10.1016/s0273-1177(02)00735-4.

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Belbruno, Edward. "On the regularizability of the big bang singularity." Celestial Mechanics and Dynamical Astronomy 115, no. 1 (November 10, 2012): 21–34. http://dx.doi.org/10.1007/s10569-012-9449-4.

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Maceda, M., J. Madore, P. Manousselis, and G. Zoupanos. "Can non-commutativity resolve the big-bang singularity?" European Physical Journal C 36, no. 4 (August 2004): 529–34. http://dx.doi.org/10.1140/epjc/s2004-01968-0.

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Bauer, Florian. "The cosmological constant filter without big bang singularity." Classical and Quantum Gravity 28, no. 22 (October 25, 2011): 225019. http://dx.doi.org/10.1088/0264-9381/28/22/225019.

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Condeescu, Cezar, and Emilian Dudas. "Kasner solutions, climbing scalars and big-bang singularity." Journal of Cosmology and Astroparticle Physics 2013, no. 08 (August 8, 2013): 013. http://dx.doi.org/10.1088/1475-7516/2013/08/013.

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WESSON, PAUL S. "A NEW LOOK AT THE BIG BANG." International Journal of Modern Physics D 17, no. 03n04 (March 2008): 635–39. http://dx.doi.org/10.1142/s0218271808012371.

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We give a mathematically exact and physically faithful embedding of curved 4D cosmology in a flat 5D space, thereby enabling visualization of the big bang in a new and informative way. In fact, in unified theories of fields and particles with real extra dimensions, it is possible to dispense with the initial singularity.
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Dissertations / Theses on the topic "Big Bang singularity"

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Ling, Eric. "The Big Bang Singularity." Thesis, University of California, Santa Barbara, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1600215.

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The big bang theory is a model of the universe which makes the striking prediction that the universe began a finite amount of time in the past at the so called "Big Bang singularity." We explore the physical and mathematical justification of this surprising result. After laying down the framework of the universe as a spacetime manifold, we combine physical observations with global symmetrical assumptions to deduce the FRW cosmological models which predict a big bang singularity. Next we prove a couple theorems due to Stephen Hawking which show that the big bang singularity exists even if one removes the global symmetrical assumptions. Lastly, we investigate the conditions one needs to impose on a spacetime if one wishes to avoid a singularity. The ideas and concepts used here to study spacetimes are similar to those used to study Riemannian manifolds, therefore we compare and contrast the two geometries throughout.

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Niz, Quevedo Gustavo. "The big crunch/big bang singularity in string/M-theory." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612804.

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Sebastianutti, Marco. "Geodesic motion and Raychaudhuri equations." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18755/.

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The work presented in this thesis is devoted to the study of geodesic motion in the context of General Relativity. The motion of a single test particle is governed by the geodesic equations of the given space-time, nevertheless one can be interested in the collective behavior of a family (congruence) of test particles, whose dynamics is controlled by the Raychaudhuri equations. In this thesis, both the aspects have been considered, with great interest in the latter issue. Geometric quantities appear in these evolution equations, therefore, it goes without saying that the features of a given space-time must necessarily arise. In this way, through the study of these quantities, one is able to analyze the given space-time. In the first part of this dissertation, we study the relation between geodesic motion and gravity. In fact, the geodesic equations are a useful tool for detecting a gravitational field. While, in the second part, after the derivation of Raychaudhuri equations, we focus on their applications to cosmology. Using these equations, as we mentioned above, one can show how geometric quantities linked to the given space-time, like expansion, shear and twist parameters govern the focusing or de-focusing of geodesic congruences. Physical requirements on matter stress-energy (i.e., positivity of energy density in any frame of reference), lead to the various energy conditions, which must hold, at least in a classical context. Therefore, under these suitable conditions, the focusing of a geodesics "bundle", in the FLRW metric, bring us to the idea of an initial (big bang) singularity in the model of a homogeneous isotropic universe. The geodesic focusing theorem derived from both, the Raychaudhuri equations and the energy conditions acts as an important tool in understanding the Hawking-Penrose singularity theorems.
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Ashley, Michael. "Singularity-free cosmological models." Thesis, 1996. http://hdl.handle.net/1885/42083.

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Singularity-free cosmological models are a recent advance in the field of exact solutions. Previously thought not to exist, these models are globally hyperbolic and obey the strong energy condition everywhere. We describe and summarize the history of these models and their general physical features. The methods by which the singularity-free models evade the general and powerful singularity theorems are discussed. Finally realistic generalisations of singularity-free models are proposed and examined. Such singularity-free but FLRW-like models may yield a classical way in which to evade the Big Bang singularity of the standard cosmological model.
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Books on the topic "Big Bang singularity"

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Mercati, Flavio. Solutions of Shape Dynamics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198789475.003.0013.

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This chapter deals with the most important results in SD, namely, the classical solutions of the theory in which the equivalence with (GR) breaks down. Firstly, I study the case of homogeneous but not isotropic cosmologies, known as ‘Bianchi IX’ universes in detail. In this case, each solution that reaches the big bang singularity can be continued uniquely through it, just by requiring continuity of the conformally- and scale-invariant degrees of freedom. The result is a couple of cosmological solutions with opposite orientation glued at the big bang. This result is more general than the homogeneous case, and can be extended to a large class of solutions if the BKL conjecture is valid. In the case of spherically symmetric solutions one has to couple gravity to some form of matter in order to have dynamically non-trivial degrees of freedom. The simplest case is a series of concentric infinitely thin shells of dust in a universe with the topology of a three-sphere. In this case too a departure from the dynamics of (GR) is seen, that manifests itself in a failure of the CMC slicing when one of the shells collapses (no spacetime corresponding to that solution of SD exists). The conformally invariant degrees of freedom, again, seem to still be regular when this happens. In the last part of the chapter I will discuss the sense in which one can talk about asymptotically flat solutions of SD, and past results in this regime.
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Collion, Stéphane. Voyage Dans les Mathématiques de L'espace-Temps: Trous Noirs, Big-Bang, Singularités. EDP Sciences, 2021.

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Book chapters on the topic "Big Bang singularity"

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Parker, Barry. "The Troublesome Singularity." In The Vindication of the Big Bang, 259–79. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4899-5980-5_11.

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"Chapter 12. Cell Division Seen as the Symmetry Breaking of the Singularity/Big Bang." In The Singularity of Nature, 117–25. Cambridge: Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/9781839162244-00117.

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"Chapter 14. The Big Bang: The Vectoral Origin of the Periodic Table and Evolution." In The Singularity of Nature, 131–41. Cambridge: Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/9781839162244-00131.

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"Chapter 17. Cell–Cell Signaling, the Energy Flow from the Big Bang to Civilization." In The Singularity of Nature, 160–64. Cambridge: Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/9781839162244-00160.

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Keats, Jonathon. "Singularity." In Virtual Words. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195398540.003.0033.

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In the future humans will live forever. Bodies will be optional. Brains will be networked, and the whole universe will be sentient. All of this is an inevitable consequence of the singularity, the moment at which computers surpass human intelligence. And the singularity will inevitably occur by the year 2045. These are the predictions of Ray Kurzweil, one of the most successful and respected technologists alive, the father of speech- and optical-character-recognition software, fundamental advances in artificial intelligence that have tapped computers into the two primary modes of human communication: oral and written. Both breakthroughs, conduits of machine learning, were achieved by imbuing computers with basic pattern recognition, such that voices with different accents and alphabets in different typefaces could be deciphered. Key to our knowledge and understanding, pattern recognition is something that humans are very good at, and Ray Kurzweil is better than most people at recognizing patterns. Perceiving subtle connections between varied technologies, he has foreseen the victory of a computer over the world’s leading chess player as well as the proliferation of seminal technologies, including the world wide web. These are reasons that prominent figures from Bill Gates to Marvin Minsky take Kurzweil seriously. Kurzweil’s prediction of the singularity follows his pattern of pattern recognition, enlarged to the scale of all history. He claims that he first recognized it while plotting human advances from the wheel to the web, discovering a curve of technological advancement that was not linear but exponential. He dubbed this the Law of Accelerating Returns and hired a team of researchers to trace it back to the Big Bang. Then he began ploddingly to move forward in time, until he reached “a profound and disruptive transformation in human capability,” circa 2045. At that point, he writes in The Singularity Is Near, his best-selling 2005 book on the subject, “the entire universe will become saturated with our intelligence. This is the destiny of the universe.” Kurzweil was not the first to make this observation.
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Smith, Quentin. "A Criticism of A Posteriori and A Priori Arguments for a Cause of the Big Bang Singularity." In Theism, Atheism, and Big Bang Cosmology, 161–91. Oxford University Press, 1995. http://dx.doi.org/10.1093/acprof:oso/9780198263838.003.0006.

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Peebles, P. J. E. "Cosmological Models." In Cosmology's Century, 36–113. Princeton University Press, 2020. http://dx.doi.org/10.23943/princeton/9780691196022.003.0003.

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This chapter examines two spatially homogenous world pictures which captured most of the attention in cosmology from the late 1940s through the mid-1960s: an evolving universe and a universe in a statistically steady state. The evolving model describes expansion according to general relativity from an exceedingly dense early condition often termed the big bang. In the big bang model, a straightforward extrapolation of its evolution back in time ends at a singularity: a manifest failure of standard general relativity. In the alternative world picture, the continual creation of matter keeps the near-homogeneously expanding universe in a steady state. It lacked Albert Einstein's endorsement, but skillful proponents kept the picture visible in England though generally less so at other research centers. The steady-state cosmology is much more predictive than the big bang, which might have been expected to have added more than it did to general interest in the model.
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T.S. Yu, Francis. "Temporal (t > 0) Space and Gravitational Waves." In Gravitational Field [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99474.

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I will begin with the nature of our temporal (t > 0) universe, since without temporal space there would be no gravitation force because gravitational field cannot be created within an empty space. When we are dealing with physical realizability of science, Einstein’s relativity theories cannot be ignored since relativistic mechanics is dealing with very large objects. Nevertheless I will show that huge gravitational waves can be created by a gigantic mass annihilation only within a temporal (t > 0) space. Since gravitational energy has never been consider as a significant component within big bang creation, I will show it is a key component to ignite the big bang explosion, contrary to commonly believed that big bang explosion was ignited by time. I will show a huge gravitation energy reservoir induced by a gigantic mass had had been created over time well before the big bang started. Since the assumed singularity mass within a temporal (t > 0) had had gotten heavier and heavier similar to a gigantic black hole that continuingly swallows up huge chunk of substances within the space. From which we see that it is the gravitational force that triggers the thermo-nuclei big bang creation, instead ignited by time as postulated. Aside the thermo-nuclei creation, it had a gigantic gravitational wave release as mass annihilates rapidly by big bang explosion. From which we see that it is the induced gravitational reservoir changes with time, but not the induced gravity changes (i.e., curves) time–space. In other words if there has no temporal (t > 0) space then there will be no gravitational waves.
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FEINSTEIN, A., K. E. KUNZE, and M. A. VÁZQUEZ-MOZO. "INITIAL CONDITIONS AND THE STRUCTURE OF THE SINGULARITY IN WAVE COLLISION INDUCED PRE-BIG-BANG COSMOLOGY." In The Ninth Marcel Grossmann Meeting, 1241–42. World Scientific Publishing Company, 2002. http://dx.doi.org/10.1142/9789812777386_0204.

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Torretti, Roberto. "On Relativity, Time Reckoning, and the Topology of Time Series." In The Arguments of Time. British Academy, 2006. http://dx.doi.org/10.5871/bacad/9780197263464.003.0004.

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This chapter devotes equal attention to special relativity and general relativity. It first describes the history of the analysis of distant simultaneity, up to and including Einstein's procedure in his revolutionary 1905 paper which introduced special relativity. In particular, the discussion relates Einstein's procedure to the ensuing philosophical debate about whether distant simultaneity is a matter of convention. As to general relativity, the discussion gives a brief sketch of Einstein's path towards his discovery of general relativity. Thereafter, it focuses on the topological structure of time or, more precisely, of timelike lines (worldlines) in spacetime. It discusses the closed timelike lines first found in an exact solution of general relativity by Godel; and the open timelike geodesics that get arbitrarily close to the initial singularity (Big Bang) in a Friedmann solution.
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Conference papers on the topic "Big Bang singularity"

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BARRAGÁN, CARLOS, GONZALO J. OLMO, and HÈLIOS SANCHIS-ALEPUZ. "AVOIDING THE BIG BANG SINGULARITY WITH PALATINI f(R) THEORIES." In Proceedings of the MG12 Meeting on General Relativity. WORLD SCIENTIFIC, 2012. http://dx.doi.org/10.1142/9789814374552_0226.

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Choudhury, D. C. "Resolution of cosmological singularity and a plausible mechanism of the big bang." In NUCLEAR PHYSICS IN THE 21st CENTURY:International Nuclear Physics Conference INPC 2001. AIP, 2002. http://dx.doi.org/10.1063/1.1469977.

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Kraiko, A. N. "A MODEL OF THE BIG BANG AND UNIVERSE EXPANSION IN GENERAL RELATIVITY WITH SPREAD OF A HOT START SINGULARITY TO EMPTY SPACE." In ХХI International Conference on the Methods of Aerophysical Research (ICMAR 2022). Novosibirsk: Федеральное государственное бюджетное учреждение «Сибирское отделение Российской академии наук», 2022. http://dx.doi.org/10.53954/9785604788967_104.

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Tonelli, Annachiara, David Mosna, and Giuseppe Vignali. "Comparative Life Cycle Assessment of different packaging systems for coffee capsules." In the 4th International Food Operations and Processing Simulation Workshop. CAL-TEK srl, 2018. http://dx.doi.org/10.46354/i3m.2018.foodops.001.

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"The aim of this work is to compare the environmental impact of three different packaging systems for coffee capsules, which can be used in the same coffee machine. A comparative Life Cycle Assessment has been performed considering the following three types of coffee capsules: 1. Compostable coffee capsules packaged into a multichamber PET tray. 2. Capsules made of aluminium and packaged into cardboard boxes. 3. Capsules made of polypropylene with an aluminium top lid, singularly packaged in modified atmosphere into a bag made of multilayer film of aluminium and polypropylene. The functional unit considered is a coffee capsule. To evaluate the environmental impact, the EPD (Environmental Product Declaration) method is used. This work shows that it is possible to reduce the environmental impact of compostable capsules packaged in PET tray by two ways: by using a less polluting starch polymer and by producing biogas instead of compost from the organic waste. With these improvements, the compostable coffee capsule in PET tray results the less damaging packaging system for all categories except than for the ozone layer depletion and the fossil fuels depletion."
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