## Browsing by Author "Paliathanasis, Andronikos"

Now showing items 1-4 of 4

• #### Classical and quantum solutions in Brans-Dicke cosmology with a perfect fluid ﻿

(American Physical SocietyPhysical Review D, 2016)
We consider the application of group invariant transformations in order to constrain a flat isotropic and homogeneous cosmological model, containing of a Brans-Dicke scalar field and a perfect fluid with a constant equation ...

• #### Cosmological solutions of $\small \textit{f(T)}$ gravity ﻿

(American Physical SocietyPhysical Review D, 2016-07-28)
In the cosmological scenario in $\small \textit{f(T)}$ gravity, we find analytical solutions for an isotropic and homogeneous universe containing a dust fluid and radiation and for an empty anisotropic Bianchi I universe. ...

• #### Dynamical analysis in scalar field cosmology ﻿

(APSPhysical Review D, 2015-06-23)
We give a general method to find exact cosmological solutions for scalar-field dark energy in the presence of perfect fluids. We use the existence of invariant transformations for the Wheeler De Witt (WdW) equation. We ...

• #### New integrable models and analytical solutions in f(R) cosmology with an ideal gas ﻿

(American Physical SocietyPhysical Review D - Particles, Fields, Gravitation and Cosmology, 2018-01-23)
In the context of f(R)-gravity with a spatially flat FLRW metric containing an ideal fluid, we use the method of invariant transformations to specify families of models which are integrable. We find three families of f(R) ...