Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Manabendra Sharma"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 2, Pp 1-17 (2023)
Abstract The strange behaviour of the universe’s dark sector offers us the flexibility to address cosmological problems with different approaches. Using this flexibility, we consider a possible exchange of energy among the dark sector components as
Externí odkaz:
https://doaj.org/article/e556b465725943ab8aee0121a0940e32
Publikováno v:
Physical Sciences Forum, Vol 7, Iss 1, p 49 (2023)
We investigate the background dynamics of a class of models with noncanonical scalar field and matter both in Friedmann Lemaitre Robertson Walker (FLRW) closed and open spacetime. The detailed dynamical system analysis is carried out in a bouncing sc
Externí odkaz:
https://doaj.org/article/867497dea1ec46e09fcc91c7b9393297
Autor:
Devanarayanan Rajeeb Kumar, Nibedita Chowdhury, S.D. Pathak, Umang Kumar, Manabendra Sharma, Vikash Kumar Ojha
Publikováno v:
Journal of High Energy Astrophysics. 36:111-119
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61c44c6a8361705a0e362276822747d1
https://doi.org/10.1016/j.jheap.2022.09.001
https://doi.org/10.1016/j.jheap.2022.09.001
Recently the background independent nonperturbative quantization technique has been extended to theories of gravity and the corresponding quantum effective cosmology has been derived, which provides us with necessary avenue to explore the pre-inflati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d144af20743e2305a780d68666d7d18d
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2020:008-008
A non-canonical scalar tachyon field is a viable candidate for dark energy and has been found to be in good agreement with observational data. Background data alone cannot completely rule out degeneracy between this model and others. To further const
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e970c0be4ef7276ecb0d90efb84fa222
https://doi.org/10.1088/1475-7516/2020/05/008
https://doi.org/10.1088/1475-7516/2020/05/008
In this paper, we study the pre-inflationary dynamics for the power-law potential $(V(\phi) \propto \phi^n)$ with $n
Comment: revtex4, 11 figure and 4 tables. Some typos are corrected, and new references are added. Phys. Rev. D96 (2017) 123533
Comment: revtex4, 11 figure and 4 tables. Some typos are corrected, and new references are added. Phys. Rev. D96 (2017) 123533
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc23f2d053d9487a526d15884d39c947
http://arxiv.org/abs/1710.09845
http://arxiv.org/abs/1710.09845
Autor:
Sukanta Panda, Manabendra Sharma
Publikováno v:
Astrophysics and Space Science. 361
We investigate the cosmology of a class of model with noncanonical scalar field and matter in an anisotropic time dependent background. Writing the Einstein Equations in terms of dimensionless dynamical variables appropriately defined for bouncing so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c01edf9a247609b51c225299c696268f
https://doi.org/10.1007/s10509-015-2594-y
https://doi.org/10.1007/s10509-015-2594-y
Autor:
Manabendra Sharma
In this paper we investigate the fate of the universe with an anisotropic background sourced by anisotropic matter. We see the behaviour of the Raychaudhuri Equation and investigate wheather a congrurence of time like geodesics focus to a point in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb028446724906992e0975cb83f2570a
http://arxiv.org/abs/1405.6020
http://arxiv.org/abs/1405.6020
We analyze the state space of a Bianchi-I universe with anisotropic sources. Here we consider an extended state space which includes null geodesics in this background. The evolution equations for all the state observables are derived. Dynamical syste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59defef33cc60e711b4f1b28d2f35a6f
http://arxiv.org/abs/1210.3159
http://arxiv.org/abs/1210.3159
Publikováno v:
Communications in Theoretical Physics; Oct2019, Vol. 71 Issue 10, p1-1, 1p