Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Sasidharan, Athira"'
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:
Sasidharan, Athira1, Bhaskaran, Ramesh1 77athira.sasidharan@gmail.com, Baiju, Nithya M.1, Rafi, Aboobacker Mohamed1, Innah, Susheela J.2
Publikováno v:
Journal of Clinical & Scientific Research. Jan-Mar2024, Vol. 13 Issue 1, p12-17. 6p.
The dynamical system behaviour and thermal evolution of a homogeneous and isotropic dissipative universe are analyzed. The dissipation is driven by the bulk viscosity $\xi = \alpha \rho^s $ and the evolution of bulk viscous pressure is described usin
Externí odkaz:
http://arxiv.org/abs/1807.04041
In our previous works, we have analyzed the evolution of bulk viscous matter dominated universe with a more general form for bulk viscous coefficient, $\zeta=\zeta_{0}+\zeta_{1}\frac{\dot{a}}{a}+\zeta_{2}\frac{\ddot{a}}{\dot{a}}$ and also carried out
Externí odkaz:
http://arxiv.org/abs/1803.08235
Evolution of the bulk viscous matter dominated universe has been analysed using the full causal, Israel-Stewart theory for the evolution of bulk viscous pressure in the context of recent acceleration of the universe. The form of bulk viscosity is tak
Externí odkaz:
http://arxiv.org/abs/1708.02437
Autor:
Sasidharan, Athira, Mathew, Titus K
Publikováno v:
JHEP 1606 (2016) 138
We consider a Friedmann model of the universe with bulk viscous matter and radiation as the cosmic components. We study the asymptotic properties in the equivalent phase space by considering the three cases for the bulk viscous coefficient as (i) $\z
Externí odkaz:
http://arxiv.org/abs/1511.05287
Publikováno v:
Indian Journal of Thoracic & Cardiovascular Surgery; Sep2024, Vol. 40 Issue 5, p590-593, 4p
Autor:
Sasidharan, Athira, Mathew, Titus K.
Publikováno v:
EPJ C 75 348 2015
We consider a cosmological model dominated by bulk viscous matter with total bulk viscosity coefficient proportional to the velocity and acceleration of the expansion of the universe in such a way that $\zeta=\zeta_{0}+\zeta_{1}\frac{\dot{a}}{a}+\zet
Externí odkaz:
http://arxiv.org/abs/1411.5154
Publikováno v:
In European Polymer Journal August 2017 93:572-589
Autor:
Vijayakumar, Sachin, Mukkada, Roy J., Koshy, Abraham, Chettupuzha, Antony, Mathew, Pradeep, Peethambaran, Maya, Paul, Shelley, Abraham, Jerry, Ramesh, H., Mahadevan, Pushpa, Prathap, Thara, Thomas, Greeshma, Mangalath, Hari, Thomas, Ebin, Sasidharan, Athira, Varghese, Prinoj
Publikováno v:
In Journal of Clinical and Experimental Hepatology 2024 14 Supplement 1