Entropy and creation cold dark matter models
| dc.contributor.author | Valentim, R. | |
| dc.contributor.author | Jesus, J. F. [UNESP] | |
| dc.contributor.institution | Universidade Federal de São Paulo (UNIFESP) | |
| dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
| dc.date.accessioned | 2019-10-06T15:37:51Z | |
| dc.date.available | 2019-10-06T15:37:51Z | |
| dc.date.issued | 2019-01-01 | |
| dc.description.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 γ ). The constraints from total entropy come from the first and second derivatives (S ′ ≥ 0 and S ″ < 0) to estimate the parameters of the model with the general matter creation rate. The preliminary outcomes suggest limits for these parameters. | en |
| dc.description.affiliation | Department of Physics Federal Universty of São Paulo – UNIFESP | |
| dc.description.affiliation | Department of Wood Engineering Universidade Estadual Paulista – UNESP | |
| dc.description.affiliationUnesp | Department of Wood Engineering Universidade Estadual Paulista – UNESP | |
| dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
| dc.description.sponsorshipId | FAPESP: 2016/09831-0 | |
| dc.description.sponsorshipId | FAPESP: 2017/05859-0 | |
| dc.format.extent | 105-107 | |
| dc.identifier | http://dx.doi.org/10.1002/asna.201913570 | |
| dc.identifier.citation | Astronomische Nachrichten, v. 340, n. 1-3, p. 105-107, 2019. | |
| dc.identifier.doi | 10.1002/asna.201913570 | |
| dc.identifier.issn | 1521-3994 | |
| dc.identifier.issn | 0004-6337 | |
| dc.identifier.scopus | 2-s2.0-85063502391 | |
| dc.identifier.uri | http://hdl.handle.net/11449/187495 | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Astronomische Nachrichten | |
| dc.rights.accessRights | Acesso restrito | |
| dc.source | Scopus | |
| dc.subject | creation of matter | |
| dc.subject | dark matter | |
| dc.subject | entropy | |
| dc.subject | models | |
| dc.title | Entropy and creation cold dark matter models | en |
| dc.type | Artigo |