Zobrazeno 1 - 10
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pro vyhledávání: '"chaplygin gas"'
In the present work, we investigate cosmological perturbations of viscous modified chaplygin gas model. Using 1 + 3 covariant formalism, we define covariant and gauge invariant gradient variables, which after the application of scalar decomposition a
Externí odkaz:
http://arxiv.org/abs/2411.11309
In the Horava Lifshitz gravity scenario, we have described the mass accretion process of a 4 dimensional Kehagias Sfetsos black hole caused by some candidates of dark energy in detail. Firstly, we have obtained the equation of mass for the black hole
Externí odkaz:
http://arxiv.org/abs/2410.20367
Autor:
Long, Bingsong
We consider two-dimensional Riemann boundary value problems of Euler equations for the Chaplygin gas with two piecewise constant initial data outside a convex cornered wedge. In self-similar coordinates, when the flow at the wedge corner is subsonic,
Externí odkaz:
http://arxiv.org/abs/2411.06108
Autor:
Frew, Jack, Keyser, Nigel, Kim, Ethan, Paddock, Griffin, Toumbleston, Camden, Wilson, Sara, Tsikkou, Charis
We consider a system of two balance laws of Keyfitz-Kranzer type with varying generalized Chaplygin gas, which exhibits negative pressure and is a product of a function of time and the inverse of a power of the density. The Chaplygin gas is a fluid d
Externí odkaz:
http://arxiv.org/abs/2407.20869
Publikováno v:
Physics of the Dark Universe 46 (2024) 101620
A crucial aspect of wormhole (WH) physics is the inclusion of exotic matter, which requires violating the null energy condition. Here, we explore the potential for WHs to be sustained by quark matter under conditions of extreme density along with the
Externí odkaz:
http://arxiv.org/abs/2408.06605
In this paper, we have investigated the phenomenon of accelerated cosmic expansion in the late universe and the mass accretion process of a 4-dimensional Einstein-Aether black hole. Starting with the basics of Einstein-Aether gravity theory, we have
Externí odkaz:
http://arxiv.org/abs/2405.15883
The motivation of this study is to find the Riemann solutions of Aw-Rascle model with friction for a more realistic version of extended Chaplygin gas. Firstly, we established the $ \delta $-shock wave in its solutions; indeed, by using generalized Ra
Externí odkaz:
http://arxiv.org/abs/2406.12318
This study examines accelerated cosmic expansion using the Viscous Modified Chaplygin Gas (VMMG) and Generalized Cosmic Chaplygin Gas (GCCM) within Horava-Lifshitz gravity. Our aim is to constrain essential cosmological parameters, such as the Hubble
Externí odkaz:
http://arxiv.org/abs/2403.06286
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