Perturbation, non-Gaussianity, and reheating in a Gauss-Bonnet -attractor model
Motivated by α-attractor models, in this paper we consider a Gauss-Bonnet inflation with an
E-model-type of potential. We consider the Gauss-Bonnet coupling function to be the same …
E-model-type of potential. We consider the Gauss-Bonnet coupling function to be the same …
Gauss–Bonnet Inflation after Planck2018
We study the primordial perturbations and reheating process in the models where the Gauss–
Bonnet (GB) term is nonminimally coupled to the canonical and noncanonical (DBI and …
Bonnet (GB) term is nonminimally coupled to the canonical and noncanonical (DBI and …
Slow-roll inflation in f (R, T) gravity with a RT mixing term
We consider slow-roll inflationary models in a class of modified theories of gravity which
contains non-minimal curvature–inflaton couplings, ie, the f (R, T) gravity, where R is the …
contains non-minimal curvature–inflaton couplings, ie, the f (R, T) gravity, where R is the …
Observational Viability of an Inflation Model with E-model Nonminimal Derivative Coupling
By starting with a two-fields model in which the fields and their derivatives are nonminimally
coupled to gravity, and then by using a conformal gauge, we obtain a model in which the …
coupled to gravity, and then by using a conformal gauge, we obtain a model in which the …
Large non-gaussianity in a non-minimally coupled derivative inflationary model with Gauss-Bonnet correction
We study a nonminimal derivative inflationary model in the presence of the Gauss-Bonnet
term. To have a complete treatment of the model, we consider a general form of the …
term. To have a complete treatment of the model, we consider a general form of the …
Tachyon mimetic inflation as an instabilities-free model
We consider the mimetic tachyon model in the Lagrange multiplier approach. We study both
the linear and nonlinear perturbations and find the perturbation and non-Gaussianity …
the linear and nonlinear perturbations and find the perturbation and non-Gaussianity …
Stability of non-minimally coupled dark energy in the geometrical trinity of gravity
Within the geometrical trinity of gravity, we analyze scalar field dark energy models
minimally and non-minimally coupled to gravity, postulating that a Yukawa-like interacting …
minimally and non-minimally coupled to gravity, postulating that a Yukawa-like interacting …
Adiabatic regularization of power spectra in nonminimally coupled chaotic inflation
AL Alinea - Journal of Cosmology and Astroparticle Physics, 2016 - iopscience.iop.org
We investigate the effect of adiabatic regularization on both the tensor-and scalar-
perturbation power spectra in nonminimally coupled chaotic inflation. Similar to that of the …
perturbation power spectra in nonminimally coupled chaotic inflation. Similar to that of the …
[HTML][HTML] Viable intermediate inflation in the mimetic DBI model
We study the intermediate inflation in the mimetic Dirac–Born–Infeld model. By considering
the scale factor as\(a= a_ {0}\exp (bt^{\beta})\), we show that in some ranges of the …
the scale factor as\(a= a_ {0}\exp (bt^{\beta})\), we show that in some ranges of the …
Late time cosmological dynamics with a nonminimal extension of the mimetic matter scenario
N Hosseinkhan, K Nozari - The European Physical Journal Plus, 2018 - Springer
We investigate an extension of mimetic gravity in which mimetic matter is nonminimally
coupled to the Ricci scalar. We derive the background field equations and show that, as the …
coupled to the Ricci scalar. We derive the background field equations and show that, as the …