Cosmological dynamics of scalar–tensor gravity

S Carloni, JA Leach, S Capozziello… - … and Quantum Gravity, 2008 - iopscience.iop.org
We study the phase space of Friedmann–Lemaître–Robertson–Walker (FLRW) models
derived from scalar–tensor gravity where the non-minimal coupling is F (ϕ)= ξϕ 2 and the …

Post-Newtonian parameters and cosmological constant of screened modified gravity

X Zhang, W Zhao, H Huang, Y Cai - Physical Review D, 2016 - APS
Screened modified gravity (SMG) is a kind of scalar-tensor theory with screening
mechanisms, which can generate a screening effect to suppress the fifth force in high …

Transformation properties and general relativity regime in scalar–tensor theories

L Järv, P Kuusk, M Saal, O Vilson - Classical and Quantum …, 2015 - iopscience.iop.org
We consider first generation scalar–tensor theories of gravitation in a completely generic
form, kee** the transformation functions of the local rescaling of the metric and the scalar …

Scalar-tensor cosmologies with a potential in the general relativity limit: phase space view

L Järv, P Kuusk, M Saal - Physical Review D—Particles, Fields, Gravitation …, 2010 - APS
We consider Friedmann-Lemaître-Robertson-Walker flat cosmological models in the
framework of general Jordan frame scalar-tensor theories of gravity with arbitrary coupling …

Scalar-tensor cosmology at the general relativity limit: Jordan versus Einstein frame

L Järv, P Kuusk, M Saal - Physical Review D—Particles, Fields, Gravitation …, 2007 - APS
We consider the correspondence between the Jordan frame and the Einstein frame
descriptions of scalar-tensor theory of gravitation. We argue that since the redefinition of the …

Scalar-tensor cosmologies: Fixed points of the Jordan frame scalar field

L Järv, P Kuusk, M Saal - Physical Review D—Particles, Fields, Gravitation …, 2008 - APS
We study the evolution of homogeneous and isotropic, flat cosmological models within the
general scalar-tensor theory of gravity with arbitrary coupling function and potential. After …

From inflation to dark energy in scalar-tensor cosmology

J Dutta, L Jarv, W Khyllep, S Tokke - arxiv preprint arxiv:2007.06601, 2020 - arxiv.org
The methods of dynamical systems have found wide applications in cosmology, with focus
either upon inflation or upon the passage into dark energy era. In this paper, we endeavor to …

Scalar-tensor cosmologies with dust matter in the general relativity limit

L Järv, P Kuusk, M Saal - Physical Review D—Particles, Fields, Gravitation …, 2012 - APS
We consider flat Friedmann-Lemaître-Robertson-Walker cosmological models in the
framework of general scalar-tensor theories of gravity with arbitrary coupling functions, set in …

Scalar-tensor cosmologies: General relativity as a fixed point of the Jordan frame scalar field

P Kuusk, L Järv, M Saal - International Journal of Modern Physics A, 2009 - World Scientific
We study the evolution of homogeneous and isotropic, flat cosmological models within the
general scalar-tensor theory of gravity with arbitrary coupling function and potential and …

Remarks on (super-) accelerating cosmological models in general scalar-tensor gravity

L Jarv, P Kuusk, M Saal - arxiv preprint arxiv:0903.4357, 2009 - arxiv.org
We consider Friedmann-Lemaitre-Robertson-Walker cosmological models in the framework
of general scalar-tensor theories of gravity (STG) with arbitrary coupling functions, set in the …