Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Rezazadeh, K."'
The standard cosmological model is in the midst of a stress test, thanks to the tension between supernovae-based measurements of the Hubble constant $H_{0}$ and inferences of its values from Cosmic Microwave Background (CMB) anisotropies. Numerous ex
Externí odkaz:
http://arxiv.org/abs/2208.07631
Publikováno v:
Physics of the Dark Universe 37, 101092 (2022)
We investigate a cosmological scenario in which the dark matter particles can be created during the evolution of the Universe. By regarding the Universe as an open thermodynamic system and using non-equilibrium thermodynamics, we examine the mechanis
Externí odkaz:
http://arxiv.org/abs/2201.05195
Publikováno v:
Annals of Physics 422 (2020) 168299
We study the effect of varying sound speed on clustering dark energy in the Dirac-Born-Infeld (DBI) scenario. The DBI action is included in the class of $k$-essence models, and it has an important role in describing the effective degrees of freedom o
Externí odkaz:
http://arxiv.org/abs/2001.07920
Publikováno v:
Eur. Phys. J. C (2019) 79:79
We study inflation with the Dirac-Born-Infeld (DBI) noncanonical scalar field in both the cold and warm scenarios. We consider the Anti-de Sitter warp factor $f(\phi)=f_{0}/\phi^{4}$ for the DBI inflation and check viability of the quartic potential
Externí odkaz:
http://arxiv.org/abs/1807.05732
Publikováno v:
MNRAS 481, 2393 (2018)
Within the framework of DBI non-canonical scalar field model of dark energy, we study the growth of dark matter perturbations in the both linear and non-linear regimes. In our DBI model, we consider the anti-de Sitter warp factor $f(\phi)=f_0\, \phi^
Externí odkaz:
http://arxiv.org/abs/1805.03069
Publikováno v:
JCAP 07 (2016) 006
We study inflation in the Brans-Dicke gravity as a special model of the scalar-tensor gravity. We obtain the inflationary observables containing the scalar spectral index, the tensor-to-scalar ratio, the running of the scalar spectral index and the e
Externí odkaz:
http://arxiv.org/abs/1605.00530
Autor:
Nomi-Golzar, S, Mahboob, S, Tavakkoli, S, Asghari Jafarabadi, M, Rezazadeh, K, Vaghef-Mehrabany, E, Ebrahimi-Mameghani, M *
Publikováno v:
In Advances in Integrative Medicine May 2021 8(2):122-128
Publikováno v:
JHEP 01 (2016) 131
We study inflation in the framework of $f(T)$-gravity in the presence of a canonical scalar field. After reviewing the basic equations governing the background cosmology in $f(T)$-gravity, we turn to study the cosmological perturbations and obtain th
Externí odkaz:
http://arxiv.org/abs/1509.08769
Publikováno v:
Phys. Rev. D 95, 103506 (2017)
Within the framework of tachyon inflation, we consider different steep potentials and check their viability in light of the Planck 2015 data. We see that in this scenario, the inverse power-law potential $V(\phi)=V_{0}(\phi/\phi_{0})^{-n}$ with $n=2$
Externí odkaz:
http://arxiv.org/abs/1508.04760
Publikováno v:
JCAP 09 (2015) 053
We study the intermediate inflation in a non-canonical scalar field framework with a power-like Lagrangian. We show that in contrast with the standard canonical intermediate inflation, our non-canonical model is compatible with the observational resu
Externí odkaz:
http://arxiv.org/abs/1411.7302