Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Jose Manuel Davila"'
Autor:
Ricardo Becerril, Susana Valdez-Alvarado, Ulises Nucamendi, Jose Manuel Davila, Pankaj Sheoran
We obtain the mass parameter for a class of static and spherically symmetric regular black holes (BHs) (namely Bardeen, Hayward and Ay\'{o}n-Beato-Garc\'{i}a BHs) which are solutions of Einstein's field equations coupled to nonlinear electrodynamics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53948c8e0c7e222c981844879d789958
http://arxiv.org/abs/2007.15300
http://arxiv.org/abs/2007.15300
Autor:
Filippo Maria Balli, Naser Ahmadiniaz, Christian Schubert, Olindo Corradini, Jose Manuel Davila
Publikováno v:
Nuclear Physics
Nuclear physics B
Nuclear Physics B 950(2020), 114877
Nuclear Physics B, Vol 950, Iss, Pp-(2020)
Nuclear physics B
Nuclear Physics B 950(2020), 114877
Nuclear Physics B, Vol 950, Iss, Pp-(2020)
Tree-level scattering amplitudes for a scalar particle coupled to an arbitrary number N of photons and a single graviton are computed. We employ the worldline formalism as the main tool to compute the irreducible part of the amplitude, where all the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::131f6c400b27a901407182e19ec408a1
http://arxiv.org/abs/1908.03425
http://arxiv.org/abs/1908.03425
We report on an ongoing study of photon amplitudes, graviton amplitudes and mixed photon-graviton amplitudes at tree-level using the worldline formalism. We explicitly recalculate the amplitude with one photon and one graviton coupled to a scalar pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b28cc7569bb81cefc5a421c4335bd2e
https://hdl.handle.net/11380/1104248
https://hdl.handle.net/11380/1104248
Autor:
Naser Ahmadiniaz, Christian Schubert, Olindo Corradini, Jose Manuel Davila, Fiorenzo Bastianelli
Publikováno v:
AIP Conference Proceedings.
We report on an ongoing study of the one-loop photon-graviton amplitudes, using both effective action and worldline techniques. The emphasis is on Kawai-Lewellen-Tye-like relations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15c1b68ff85d756c83de1eb631d6c36a
https://doi.org/10.1063/1.4817048
https://doi.org/10.1063/1.4817048
We report on the status of an ongoing effort to calculate the complete one-loop low-energy effective actions in Einstein-Maxwell theory with a massive scalar or spinor loop, and to use them for obtaining the explicit form of the corresponding M-gravi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72182b330fc8b51154216ac0a4a927ec
http://hdl.handle.net/11585/130247
http://hdl.handle.net/11585/130247
Autor:
Christian Schubert, Jose Manuel Davila
Publikováno v:
Classical and quantum gravity
We use a recently derived integral representation of the one-loop effective action in Einstein-Maxwell theory for an explicit calculation of the part of the effective action containing the information on the low energy limit of the five-point amplitu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::decd690af33e764892f328dfffedbbf9
http://arxiv.org/abs/0912.2384
http://arxiv.org/abs/0912.2384
Publikováno v:
PARTICLES AND FIELDS: Proceedings of the XIII Mexican School of Particles and Fields.
Considerable work has been done on the one-loop effective action in combined electromagnetic and gravitational fields, particularly as a tool for determining the properties of light propagation in curved space. After a short review of previous work,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b227da2aa2db012e4538443d208bb27
https://doi.org/10.1063/1.3131572
https://doi.org/10.1063/1.3131572
Publikováno v:
International Journal of Modern Physics A. 29:1450174
We study the processes of photon-photon scattering and photon splitting in a magnetic field in Born-Infeld theory. In both cases we combine the terms from the tree-level Born-Infeld Lagrangian with the usual one-loop QED contributions, where those ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70c80e47522756fda2cd9f5f296c98f0
https://doi.org/10.1142/s0217751x14501747
https://doi.org/10.1142/s0217751x14501747
Publikováno v:
Journal of high energy physics : JHEP
We use the worldline formalism for calculating the one-loop effective action for the Einstein-Maxwell background induced by charged scalars or spinors, in the limit of low energy and weak gravitational field but treating the electromagnetic field non
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c54b169500adc4f24a1c6b2a697bd7ae
https://doi.org/10.1088/1126-6708/2009/03/086
https://doi.org/10.1088/1126-6708/2009/03/086
Publikováno v:
Physics Letters B. (2):345-349
We present first results of a systematic study of the structure of the low energy limit of the one-loop photon-graviton amplitudes induced by massive scalars and spinors. Our main objective is the search of KLT-type relations where effectively two ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::410b76ab20620f7ebdd53e019667a7cd