Complete cosmic history with a dynamical Λ<? format?>=<? format?> Λ (H) term

ELD Perico, JAS Lima, S Basilakos, J Sola - Physical Review D—Particles …, 2013 - APS
In the present mainstream cosmology, matter and space-time emerged from a singularity
and evolved through four distinct periods: early inflation, radiation, dark matter, and late-time …

Gravitational induced particle production through a nonminimal curvature–matter coupling

T Harko, FSN Lobo, JP Mimoso, D Pavón - The European Physical …, 2015 - Springer
We consider the possibility of a gravitationally induced particle production through the
mechanism of a nonminimal curvature–matter coupling. An interesting feature of this …

Evolution of the universe in entropic cosmologies via different formulations

N Komatsu, S Kimura - Physical Review D, 2014 - APS
We study two types of entropic-force models in a homogeneous, isotropic, spatially flat,
matter-dominated universe. The first type is a Λ (t) type similar to Λ (t) CDM (varying-lambda …

Particle and entropy production in the running vacuum universe

J Sola Peracaula, H Yu - General Relativity and Gravitation, 2020 - Springer
We study particle production and the corresponding entropy increase in the context of
cosmology with dynamical vacuum. We focus on the particular form that has been called …

General form of entropy on the horizon of the universe in entropic cosmology

N Komatsu, S Kimura - Physical Review D, 2016 - APS
Entropic cosmology assumes several forms of entropy on the horizon of the universe, where
the entropy can be considered to behave as if it were related to the exchange (the transfer) …

Gravitationally induced particle production: Thermodynamics and kinetic theory

JAS Lima, I Baranov - Physical Review D, 2014 - APS
A relativistic kinetic description for the irreversible thermodynamic process of gravitationally
induced particle production is proposed in the context of an expanding Friedmann …

Evolution and dynamics of a matter creation model

S Pan, J Haro, A Paliathanasis… - Monthly Notices of the …, 2016 - academic.oup.com
Abstract In a flat Friedmann–Lemaître–Robertson–Walker (FLRW) geometry, we consider
the expansion of the universe powered by the gravitationally induced 'adiabatic'matter …

Entropic cosmology in a dissipative universe

N Komatsu, S Kimura - Physical Review D, 2014 - APS
The bulk viscosity of cosmological fluid and the creation of cold dark matter both result in the
generation of irreversible entropy (related to dissipative processes) in a homogeneous and …

Is the transition redshift a new cosmological number?

JAS Lima, JF Jesus, RC Santos, MSS Gill - arXiv preprint arXiv:1205.4688, 2012 - arxiv.org
Observations from Supernovae Type Ia (SNe Ia) provided strong evidence for an expanding
accelerating Universe at intermediate redshifts. This means that the Universe underwent a …

Gravitationally induced matter creation in scalar–tensor f (R, TμνTμν) gravity

RAC Cipriano, T Harko, FSN Lobo, MAS Pinto… - Physics of the Dark …, 2024 - Elsevier
In this work, we analyze the possibility of gravitationally induced matter creation in the so-
called Energy–Momentum-Squared gravity (EMSG), ie f (R, T μ ν T μ ν) gravity, in its …