| Texto completo | |
| Autor(es): |
Valentim, R.
;
Jesus, J. F.
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ASTRONOMISCHE NACHRICHTEN; v. 340, n. 1-3, p. 3-pg., 2019-01-01. |
| Resumo | |
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) | |
| Processo FAPESP: | 16/09831-0 - Populações de Estrelas de Nêutrons: ferramentas estatísticas bayesianas |
| Beneficiário: | Rodolfo Valentim da Costa Lima |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/05859-0 - O universo acelerado: natureza e testes da energia escura e matéria escura |
| Beneficiário: | José Fernando de Jesus |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |