Zobrazeno 1 - 10
of 866
pro vyhledávání: '"Paul, B. C."'
In this paper, we attempt to explore the possibility of a obtaining a viable emergent universe scenario supported by a type of fluid known as the extended Chaplygin gas, which extends a modification to the equation of state of the well known modified
Externí odkaz:
http://arxiv.org/abs/2307.02602
Publikováno v:
Class. Quantum Grav. 40 (2023) 095009
A non-singular Emergent Universe (EU) scenario within the realm of standard Relativistic physics requires a generalization of the Equation of State (EoS) connecting the pressure and energy density. This generalized EoS is capable of describing a comp
Externí odkaz:
http://arxiv.org/abs/2303.13783
Publikováno v:
Eur.Phys.J.Plus (2023) 138:929
In this paper we take matter source with non-linear Equation of state (EoS) that has produced non-singular Emergent cosmology for spatially flat universe in General Relativity and minimally coupled scalar field with two different potentials that prod
Externí odkaz:
http://arxiv.org/abs/2302.09062
Publikováno v:
Phys. Dark Universe 43, 101411 (2024)
We represent a class of new Gravastar solutions as obtained by Mazur and Mottola in a gravitational Bose-Einstein condensate (GBEC) in a cylindrical symmetric space-time. A stable gravastar with three distinct regions namely, (i) Interior de-Sitter s
Externí odkaz:
http://arxiv.org/abs/2302.04874
We investigate both the interacting and non-interacting R\'{e}nyi Holographic Dark Energy (RHDE) models in DGP brane world framework. Cosmological parameters and their evolutions are probed to obtain realistic cosmological models. We note that both t
Externí odkaz:
http://arxiv.org/abs/2202.06813
R\'enyi Holographic Dark Energy (RHDE) Models has been studied in different dimensions considering a flat FRW metric, subsequently exploring the nature of evolution of different cosmological parameters. It is seen that the number of dimensions affect
Externí odkaz:
http://arxiv.org/abs/2111.13935
Publikováno v:
Eur. Phys. J. Plus 136, 771 (2021)
We have discussed here a higher dimensional cosmological model and explained the recent acceleration with a Chaplygin type of gas. Dimensional reduction of extra space is possible in this case. Our solutions are general in nature because all the well
Externí odkaz:
http://arxiv.org/abs/2104.12169
We study static traversable wormholes obtained by Morris and Thorne in general relativity (GR) in the framework of a modified theory of gravity. The modified gravitational action $f(R,T)$ is a function of the Ricci scalar ($R$) and of the trace of th
Externí odkaz:
http://arxiv.org/abs/2102.01556
Gravastars have been considered as a feasible alternative to black holes in the past couple of decades. Stable models of gravastar have been studied in many of the alternative gravity theories besides standard General Relativity (GR). The Rastall the
Externí odkaz:
http://arxiv.org/abs/2102.01524
We present a broadband spectral analysis of accreting neutron stars using data from XIS and PIN onboard \emph{Suzaku}. From spectral fits of these sources with a single continuum model including a powerlaw and high energy cut-off, cyclotron lines (wh
Externí odkaz:
http://arxiv.org/abs/2101.01727