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The bouncing cosmological model

WebThe theory could potentially explain why a repulsive form of energy known as the cosmological constant, which is accelerating the expansion of the universe, is several … Web1 Introduction Investigation of non-singular bouncing cosmological solutions to Einstein field equations has a history that dates back to first half of the twentieth century, and can be attributed to various works of Lemaitre, Tolman, Friedmann and even Einstein himself(see, e.g. ref. [1] for early histories of bouncing cosmology).

Slow-roll parameter b is plotted for the chaotic bouncing model …

WebOct 12, 2024 · In this work we demonstrate that wormholes can in principle be naturally created during the cosmological bounce without the need for the exotic matter or any kind of additional modifications of the gravitational sector, apart from the one enabling the cosmological bounce. WebA bounce cosmology in f (R) cosmological settings was reported in , where it was observed that the bouncing point is characterized by a type-IV singularity. In another interesting study, Odintsov and Oikonomou [ 50 ] provided an f ( R ) gravity description of a Λ CDM bouncing model without depending on any matter fluid or cosmological constant. murco cranbrook https://thetoonz.net

Research on Bouncing Cosmology Paul J. Steinhardt

WebMar 25, 2024 · We present the cosmological model of a bouncing universe with causal fluid in the universe. The dissipative effects of the causal cosmic fluid is probed with both … WebFeb 15, 2024 · A bouncing cosmological scenario naturally avoids this singularity problem, although at the cost of having to introduce new physics to obtain the bounce. 2 A second challenge which the inflationary scenario faces is the … WebCosmological Bounces and Bouncing Cosmologies. Simons Observatory. Located in the high Atacama Desert in Northern Chile at an altitude of 17,000 ft, the Observatory will … how to open a literary analysis

Inhomogeneous Dark Fluid and Dark Matter, Leading to a

Category:[1603.05834] Bouncing Cosmologies: Progress and Problems - arXiv.org

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The bouncing cosmological model

[1803.01961] Bouncing Cosmology made simple

WebBouncing Cosmology made simple, Class. Quantum Grav. 35 (2024) 135004. An intuitive way to illustrate how cosmological models with a classical (nonsingular) bounce … WebNov 14, 2024 · In this paper, we have presented a bouncing cosmological model of the Universe in an extended theory of gravity. The dynamical behaviour of the model obtained …

The bouncing cosmological model

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WebIn this section we consider the FLRW cosmological model. In that context, the universe can be approximated as composed by non-interacting constituents, each one being a perfect fluid with density , partial pressure and state equation , such that they add up to the total density and total pressure . [6] Let us now define the following functions: WebJun 11, 2014 · A Critical Review of Classical Bouncing Cosmologies. Diana Battefeld, Patrick Peter. Given the proliferation of bouncing models in recent years, we gather and critically …

WebAug 5, 2024 · The bouncing model is investigated in the presence of Tsallis Holographic Dark energy (THDE), Rényi Holographic Dark energy (RHDE), and Sharma-Mittal … Cosmological likelihood data is here: this https URL; likelihood software is here: th…

WebJan 20, 2024 · Here we have considered a bouncing cosmological model described by a given scale factor motivated from loop quantum gravity (LQG) and have studied the consequent dynamical behaviour of the model. Also, ρ c is a constant parameter that captures the quantum nature of the space-time. WebJun 1, 2024 · The tantalizing possibility of having a cosmological scenario with all the properties above is strong motivation for exploring classical (non-singular) bouncing …

WebMar 18, 2016 · Bouncing Cosmologies: Progress and Problems. Robert Brandenberger, Patrick Peter. We review the status of bouncing cosmologies as alternatives to …

WebMar 25, 2024 · The observational constraints of the parameters of bouncing cosmological models are estimated making use of the observed cosmological data. The physical and geometrical aspects of the cosmological models based on the imposed constraints are also discussed. Introduction murcuprial wandWebJan 1, 2005 · Request PDF Bouncing Cosmological Models:. Theory and Perspectives In the past few years, there has been an increasing interest on bouncing cosmological models. how to open a little giant ladderWebAug 5, 2024 · I create two bouncing cosmological models, one in which the Lagrangian f (Q) is assumed to have a linear dependence on Q and the other in which it has a polynomial functional form. It has been... murcott orangesWebDec 5, 2024 · His model includes a concept known as bouncing cosmology. The concept first appeared at least 40 years ago, and it agrees that the universe is expanding, but does not assume that the universe... how to open a liquor store in tennesseeWebJul 15, 2024 · The equation of state (EoS) parameter and the energy conditions of the model have been analysed. The violation of strong energy condition further supports the … how to open a listerine bottleWebKaluza-Klein cosmological model has been obtained in the general theory of relativity. The source for energy-momentum tensor is assumed a perfect fluid. The field equations have been solved by using how to open all folders at onceWebJun 15, 2013 · A class of non-singular bouncing cosmological models of a general class of Bianchi models filled with perfect fluid in the framework of f ( R, T) gravity is presented. The model initially accelerates for a certain period of time and decelerates thereafter. The physical behaviour of the model is also studied. 1 Introduction murcotts driving