Zobrazeno 1 - 4
of 4
pro vyhledávání: '"W. S. Hipólito-Ricaldi"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 5, Pp 1-13 (2018)
Abstract Reduced relativistic gas (RRG) is a useful approach to describe the warm dark matter (WDM) or the warmness of baryonic matter in the approximation when the interaction between the particles is irrelevant. The use of Maxwell distribution lead
Externí odkaz:
https://doaj.org/article/5b99e4128fc14883aeeeeb27603ebd7f
Publikováno v:
International Journal of Modern Physics D. 26:1750019
We enlarge the classes of inflaton and quintessence fields by generalizing the pseudo Nambu--Goldstone boson potential by means of elliptic Jacobian functions, which are characterized by a parameter $k$. We use such a generalization to implement an i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dba3278113f20eb7ebd2791e77b54b26
https://doi.org/10.1142/s0218271817500195
https://doi.org/10.1142/s0218271817500195
A suitable nonlinear interaction between dark matter with an energy density $\rho_{M}$ and dark energy with an energy density $\rho_{X}$ is known to give rise to a non-canonical scaling $\rho_{M} \propto \rho_{X}a^{-\xi}$ where $\xi$ is a parameter w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2eeff0439911b7604505143bb49ad59
http://arxiv.org/abs/1409.7706
http://arxiv.org/abs/1409.7706
We investigate a spatially flat Friedmann-Lema\^itre-Robertson-Walker cosmology in which a decaying vacuum term causes matter production at late times. Assuming a decay proportional to the Hubble rate, the ratio of the background energy densities of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74d4ae2965cc398e585159e7ac94a60d
http://arxiv.org/abs/1009.0672
http://arxiv.org/abs/1009.0672