Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Abel Azeredo"'
Publikováno v:
Journal of Mathematical Physics. 43:473-491
A prescription for computing the propagator for D-dimensional higher-derivative gravity theories, based on the Barnes–Rivers operators, is presented. A systematic study of the tree-level unitarity of these theories is developed and the agreement of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99a098239a12aee4b8ea1484501af980
https://doi.org/10.1063/1.1415743
https://doi.org/10.1063/1.1415743
Publikováno v:
Journal of Physics A: Mathematical and General. 34:7213-7219
Three-dimensional quadratic gravity, unlike general relativity in (2+1)D, is dynamically nontrivial and has a well behaved nonrelativistic potential. Here we analyse the changes that occur when a topological Chern-Simons term is added to this theory.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27a5a0122c3c2f31b3243d6d87c7909c
https://doi.org/10.1088/0305-4470/34/36/307
https://doi.org/10.1088/0305-4470/34/36/307
Publikováno v:
Modern Physics Letters A. 16:1449-1456
Quadratic gravity in (2+1)D, unlike three-dimensional Einstein's gravity, is locally nontrivial and has an extremely well-behaved potential. Here we explore the gravitational properties of a metric generated by a pointlike matter distribution within
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef7b65e5cff5fc5a9aba1bf81204252a
https://doi.org/10.1142/s0217732301004698
https://doi.org/10.1142/s0217732301004698
Publikováno v:
Physics Letters A. 279:169-174
Higher-derivative gravity in 2+1 dimensions is considered. The general solution of the linearized field equations in a three-dimensional version of the Teyssandier gauge is obtained, and from that the solution for a static pointlike source is found.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aedbf413a22c0404217b184a0db29e3a
https://doi.org/10.1016/s0375-9601(00)00828-8
https://doi.org/10.1016/s0375-9601(00)00828-8
Publikováno v:
Physics Letters B. 495:394-400
An algorithm for computing the propagator for three-dimensional quadratic gravity with a gravitational Chern–Simons term, based on an extension of the three-dimensional Barnes–Rivers operators, is proposed. A systematic study of the tree-level un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75c717e8ee0ba9a8bb9d16912557f673
https://doi.org/10.1016/s0370-2693(00)01223-5
https://doi.org/10.1016/s0370-2693(00)01223-5
Publikováno v:
Progress of Theoretical Physics. 104:103-122
The scattering of photons by a static gravitational field, treated as an external field, is discussed in the context of gravity with higher derivatives. It is shown that the R 2 sector of the theory does not contribute to the photon scattering, where
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52d1064429dbe815667cf67ee6a4a8a0
https://doi.org/10.1143/ptp.104.103
https://doi.org/10.1143/ptp.104.103
Publikováno v:
Classical and Quantum Gravity. 14:1163-1166
A non-variational technique for computing the stress - energy tensor is presented. The prescription is used, among other things, to obtain the correct field equations for Prasanna's highly nonlinear electrodynamics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c21f7a4a1b672593ac4c70cb899df5a
https://doi.org/10.1088/0264-9381/14/5/019
https://doi.org/10.1088/0264-9381/14/5/019