Browsing Open Access Repositories by Author "Basilakos, Spyros"
Now showing items 1-4 of 4
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Classical and quantum solutions in Brans-Dicke cosmology with a perfect fluid
Paliathanasis, Andronikos; Tsamparlis, Michael; Basilakos, Spyros; Barrow, John David (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 ...
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Dynamical analysis in scalar field cosmology
Paliathanasis, Andronikos; Tsamparlis, Michael; Basilakos, Spyros; Barrow, John David (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 ...
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Hyperbolic Inflation in the Light of Planck 2015 data
Basilakos, Spyros; Barrow, John David (APSPhysical Review D, 2015-05-18)Rubano and Barrow have discussed the emergence of a dark energy, with late-time cosmic acceleration arising from a self-interacting homogeneous scalar field with a potential of hyperbolic power type. Here, we study the ...
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New integrable models and analytical solutions in f(R) cosmology with an ideal gas
Papagiannopoulos, Giannis; Basilakos, Spyros; Barrow, John David; Paliathanasis, Andronikos (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) ...