Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Golanbari, T."'
The scenario of slow-roll inflation is explored in the $f(R,T)$ theory of gravity where a non-minimal coupling between matter and curvature is included. A noncanonical scalar field is assumed to play the role of inflaton which contains generalized ki
Externí odkaz:
http://arxiv.org/abs/2301.08319
We study the possibility of having HDE as the source of inflation in the frame of $f(R,T)$ gravity theory. The length scale of the energy density is taken as the GO cutoff, which is a combination of the Hubble parameter and its time derivative. It is
Externí odkaz:
http://arxiv.org/abs/2301.02631
Publikováno v:
Phys. Rev. D 97, 083006 (2018)
The constant-roll inflation is studied where the inflaton is taken as a tachyon field. Since in this approach the second slow-roll parameter is assumed to be of order one instead of being small, then the perturbation parameters will be considered aga
Externí odkaz:
http://arxiv.org/abs/1801.03487
Slow-roll inflationary scenario is considered in non-canonical scalar field model supposing a power-law function for kinetic term, and using two formalisms. In the first approach, the potential is considered as a power-law function, that is the most
Externí odkaz:
http://arxiv.org/abs/1708.03675
Using the non-canonical model of scalar field, the cosmological consequences of a pervasive, self-interacting, homogeneous and rolling scalar field are studied. In this model, the scalar field potential is nonlinear and decreases in magnitude with in
Externí odkaz:
http://arxiv.org/abs/1512.05571
Publikováno v:
Annals Phys. 385 (2017) 214
In this paper, we will study the effect of having a minimum measurable length on inflationary cosmology. We will analyze the inflationary cosmology in the Jacobson approach. In this approach, gravity is viewed as an emergent thermodynamical phenomeno
Externí odkaz:
http://arxiv.org/abs/1505.04392
Publikováno v:
Phys. Rev. D 90, 084028 (2014)
Tachyon inflation is reconsidered by using the recent observational data obtained from Planck-2013 and BICEP2. The Hamilton-Jacobi formalism is picked out as a desirable approach in this work, which allows one to easily obtain the main parameters of
Externí odkaz:
http://arxiv.org/abs/1502.07578
Publikováno v:
Phys. Rev. D 89, 103529(2014)
In this work, we are going to study the inflationary era of the Universe evolution by using second type of Randall-Sundrum model (RS-II) braneworld gravity. It is supposed that the Universe is dominated by scalar field with noncanonical kinetic terms
Externí odkaz:
http://arxiv.org/abs/1405.6359
Publikováno v:
Astrophys. Space Sci. 348 (2013) 233
We study the holographic dark energy (HDE) model in generalized Brans-Dicke scenario with a non-minimal coupling between the scalar field and matter lagrangian namely Chameleon Brans Dicke (CBD) mechanism. In this study we consider the interacting an
Externí odkaz:
http://arxiv.org/abs/1404.2139
Publikováno v:
Astrophys. Space Sci. 357 (2015)159
A DGP brane-world framework is picked out to study quark-hadron phase transition problem. The model also includes a bulk scalar field in agreement with string theory prediction. The work is performed utilizing two formalisms as: smooth crossover appr
Externí odkaz:
http://arxiv.org/abs/1404.2142