Cosmological model from the holographic equipartition law with a modified Rényi entropy

N Komatsu - The European Physical Journal C, 2017 - Springer
Cosmological equations were recently derived by Padmanabhan from the expansion of
cosmic space due to the difference between the degrees of freedom on the surface and in …

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 …

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 …

Creation of mass dimension one fermionic particles in asymptotically expanding universe

SH Pereira, RC Lima - International Journal of Modern Physics D, 2017 - World Scientific
In the present work we study the process of particle creation for mass dimension one
fermionic fields (sometimes named Elko) as a consequence of expansion of the universe …

Is ΛCDM an effective CCDM cosmology?

JAS Lima, RC Santos, JV Cunha - Journal of Cosmology and …, 2016 - iopscience.iop.org
We show that a cosmology driven by gravitationally induced particle production of all non-
relativistic species existing in the present Universe mimics exactly the observed flat …

Cosmic microwave background radiation temperature in a dissipative universe

N Komatsu, S Kimura - Physical Review D, 2015 - APS
The relationship between the cosmic microwave background radiation temperature and the
redshift, ie, the T− z relation, is examined in a phenomenological dissipative model. The …

Degeneracy between CCDM and cosmologies

MV Santos, I Waga, RO Ramos - Physical Review D, 2014 - APS
The creation of cold dark matter cosmology model is studied beyond the linear perturbation
level. The skewness is explicitly computed, and the results are compared to those from the Λ …

Evolution of CMB temperature in a Chaplygin gas model from deep learning perspective

M Salti, EE Kangal, O Aydogdu - Astronomy and Computing, 2021 - Elsevier
Evolution of the cosmic microwave background (CMB) radiation temperature is investigated
in the context of modified generalized Chaplygin gas (mgCG) model with a Deep Neural …