Zobrazeno 1 - 10
of 187
pro vyhledávání: '"Mathew, Titus"'
The emergent space paradigm is a unique way to understand the universe's expansion. In this paradigm, as proposed by Padmanabhan in the context of Einstein's gravity the expansion of the universe is driven by the difference between the degrees of fre
Externí odkaz:
http://arxiv.org/abs/2410.15918
Extending the standard $\Lambda$CDM model by considering dissipative effects within a causal viscous framework, and obtaining an analytical solution for the Hubble parameter remains a challenge in the literature. In this work, we resolve this dilemma
Externí odkaz:
http://arxiv.org/abs/2409.10919
This study examines the statistical fluctuations in energy on the Hubble horizon and the Komar energy, which represents the total gravitational energy within the horizon, as the universe expands. Our analysis reveals that these fluctuations generally
Externí odkaz:
http://arxiv.org/abs/2408.09771
Autor:
Pai, Vishnu A, Mathew, Titus K
Various studies have shown that the late acceleration of the universe can be caused by the bulk viscosity associated with dark matter. But recently, it was indicated that a cosmological constant is essential for maintaining Near Equilibrium Condition
Externí odkaz:
http://arxiv.org/abs/2309.06093
Autor:
Sasidharan, Athira, Mathew, Titus K
In this paper we consider dissipative effects in $\Lambda$CDM model, i.e., we consider a universe with cosmological constant having viscous matter. We assume the most general form for bulk viscous coefficient, $\zeta=\zeta_{0}+\zeta_{1}\frac{\dot{a}}
Externí odkaz:
http://arxiv.org/abs/2307.05576
Autor:
Pai, Vishnu A, Mathew, Titus K
Recent studies indicate that, near equilibrium condition could not be maintained for bulk viscous matter models during the accelerated expansion of the universe in the context of Einstein's gravity, without including the cosmological constant. But fr
Externí odkaz:
http://arxiv.org/abs/2303.14451
Autor:
P, Nandhida Krishnan., Mathew, Titus K
Recently, Barrow accounts for the quantum gravitational effects to the black hole surface. Thus the conventional area-entropy relation has modified, $S=(A/A_{0})^{1+\Delta/2},$ with an exponent $\Delta$, ranges $0\le\Delta\le1$, quantifies the amount
Externí odkaz:
http://arxiv.org/abs/2302.01554
The phenomenologically emergent dark energy (PEDE) model is a varying dark energy model with no extra degrees of freedom proposed by Li and Shafieloo\citep{Li_2019} to alleviate the Hubble tension. The statistical consistency of the model has been di
Externí odkaz:
http://arxiv.org/abs/2301.12172
Neutrinos can acquire both dynamic and geometric phases due to the non-trivial mixing between mass and flavour eigenstates. In this article, we derive the general expressions for all plausible gauge invariant diagonal and off-diagonal geometric phase
Externí odkaz:
http://arxiv.org/abs/2212.08245
In this paper, we obtain the law of emergence with Tsallis entropy from the thermodynamic laws. We first derive the law of emergence from the equilibrium description of the unified first law and Clausius relation. However, it has been shown that cons
Externí odkaz:
http://arxiv.org/abs/2211.14039