Zobrazeno 1 - 9
of 9
pro vyhledávání: '"E. P. Spaniol"'
Publikováno v:
Advances in High Energy Physics, Vol 2020 (2020)
The Thermo Field Dynamics (TFD) formalism is used to investigate the regular black holes at finite temperature. Using the Teleparalelism Equivalent to General Relativity (TEGR), the gravitational Stefan-Boltzmann law and the gravitational Casimir eff
Externí odkaz:
https://doaj.org/article/2ed2ad6fa3604b2387e2e877d6f0bace
Publikováno v:
General Relativity and Gravitation. 53
Both Stefan-Boltzmann law and the Casimir effect, in a universe described by the FRW metric with zero curvature, are calculated. These effects are described by Thermo Field Dynamics (TFD). The gravitational energy-momentum tensor is defined in the co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c986f6a7d9f52fc7c767199cd0910be9
https://doi.org/10.1007/s10714-021-02826-y
https://doi.org/10.1007/s10714-021-02826-y
Publikováno v:
Advances in High Energy Physics
Advances in High Energy Physics, Vol 2020 (2020)
Advances in High Energy Physics, Vol 2020 (2020)
The Thermo Field Dynamics (TFD) formalism is used to investigate the regular black holes at finite temperature. Using the Teleparalelism Equivalent to General Relativity (TEGR) the gravitational Stefan-Boltzmann law and the gravitational Casimir effe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79d4e8afbdbc5a8df970f2c950c91ed4
Autor:
E. P. Spaniol, S. C. Ulhoa
Publikováno v:
Journal of Gravity. 2016:1-7
The paper deals with the calculation of the gravitational entropy in the context of teleparallel gravity for de Sitter space-time. In such a theory it is possible to define gravitational energy and pressure; thus we use those expressions to construct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cda4661f20312a3af1b8eb223059813c
https://doi.org/10.1155/2016/4504817
https://doi.org/10.1155/2016/4504817
Publikováno v:
Modern Physics Letters A. 35:2050051
This paper deals with quantum gravitation applied to a simple neutron star model. For the quantization process, we use the Weyl prescription that can be used for functions that are not defined in the phase space. The Weyl quantization is applied to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0093013e87c5f7e231d8d1fc5141d7a
https://doi.org/10.1142/s0217732320500510
https://doi.org/10.1142/s0217732320500510
Publikováno v:
Brazilian Journal of Physics. 44:811-816
We study the effects of boosts on the gravitoelectric and gravitomagnetic fields, as described in the Teleparallel Equivalent of General Relativity context, and use the Schwarzschild geometry as a primer example, to reaffirm the definitions of the tw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7afd796f91a6488673f570676b3f1284
https://doi.org/10.1007/s13538-014-0256-0
https://doi.org/10.1007/s13538-014-0256-0
Publikováno v:
Gravitation and Cosmology. 19:85-91
In the context of the teleparallel equivalent of general relativity (TEGR) we investigate the role of local observers, associated with tetrad fields, in the description of the gravitational interaction through the concepts of the gravitoelectric (GE)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c9a243f223b151f6d5f01dd17622dc1
https://doi.org/10.1134/s0202289313020102
https://doi.org/10.1134/s0202289313020102
Autor:
S. C. Ulhoa, E. P. Spaniol
This work is devoted to analyze the energy of the Universe in the context of f(T) theories. Such theories are the analogous counterpart of the well known f(R) theories that, however, uses torsion instead of curvature. We obtain a general expression f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dac98e67ace42fed4882e84317542c6a
Autor:
V. C. de Andrade, E. P. Spaniol
The assumption that matter charges and currents could generate fields, which are called, by analogy with electromagnetism, gravitoeletric and gravitomagnetic fields, dates from the origins of General Relativity (GR). On the other hand, the Teleparall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05f54b58f892df2172a4a86b73de8ddf
http://arxiv.org/abs/0802.2697
http://arxiv.org/abs/0802.2697