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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Entropy and creation cold dark matter models

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Author(s):
Valentim, R. [1, 2] ; Jesus, J. F. [1, 3]
Total Authors: 2
Affiliation:
[1] Fed Univ Sao Paulo UNIFESP, Dept Phys, Sao Paulo - Brazil
[2] Rua Geraldo Alckmin 519, BR-18409010 Itapeva, SP - Brazil
[3] Univ Estadual Paulista UNESP, Dept Wood Engn, Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: ASTRONOMISCHE NACHRICHTEN; v. 340, n. 1-3, SI, p. 105-107, JAN-MAR 2019.
Web of Science Citations: 0
Abstract

Entropy is a fundamental concept from thermodynamics, and it can be used to study models in the context of the creation cold dark matter. A general feature of these models is that thermodynamic equilibrium is reached at last at the de Sitter era. Total Universe's entropy is calculated based on three terms: apparent horizon (S-h), entropy of matter (S-m), and entropy of radiation (S). The constraints from total entropy come from the first and second derivatives () to estimate the parameters of the model with the general matter creation rate. The preliminary outcomes suggest limits for these parameters. (AU)

FAPESP's process: 16/09831-0 - Neutron Stars populations: bayesian statistics tools
Grantee:Rodolfo Valentim da Costa Lima
Support type: Regular Research Grants
FAPESP's process: 17/05859-0 - The accelerating universe: nature and tests of dark energy and dark matter
Grantee:José Fernando de Jesus
Support type: Regular Research Grants