Zobrazeno 1 - 10
of 52
pro vyhledávání: '"R. F. Sobreiro"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 10, Pp 1-8 (2022)
Abstract In this work we consider the Einstein–Hilbert action in the first order order formalism coupled to Dirac spinors. From the little group symmetry, we derive the corresponding Bargmann–Wigner current which is conserved but not gauge invari
Externí odkaz:
https://doaj.org/article/6d70ecdd39f24b4a8b870750dbea2eef
Autor:
T. S. Assimos, R. F. Sobreiro
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 1, Pp 1-13 (2020)
Abstract The equivalence between Chern–Simons and Einstein–Hilbert actions in three dimensions established by Achúcarro and Townsend (Phys Lett B 180:89, 1986) and Witten (Nucl Phys B 311:46, 1988) is generalized to the off-shell case. The techn
Externí odkaz:
https://doaj.org/article/911a9ca0171e4caeb66f566007bfad84
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 77, Iss 4, Pp 1-10 (2017)
Abstract We show that the four-dimensional Lovelock–Cartan action can be derived from a massless gauge theory for the SO(1, 3) group with an additional BRST trivial part. The model is originally composed of a topological sector and a BRST exact pie
Externí odkaz:
https://doaj.org/article/d60c803ee4344eea8939803ad5431a68
Publikováno v:
Physical Review
Recently, a new procedure to quantize the SU(N) Yang-Mills theory in the nonperturbative regime was proposed. The idea is to divide the configuration space {Aμ} into sectors labeled by different topological degrees of freedom and fix the gauge separ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79822849834c4cf7eb90b443763d76a5
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
European Physical Journal
In this work we consider the Einstein-Hilbert action in the first order order formalism coupled to Dirac spinors. From the little group symmetry, we derive the corresponding Bargmann-Wigner current which is conserved but not gauge invariant. Therefor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd1b9f80cddd9d41ec9809ce5607ebe2
http://arxiv.org/abs/2110.09363
http://arxiv.org/abs/2110.09363
Autor:
T. R. S. Santos, A. A. Tomaz, O. C. Junqueira, G. Sadovski, R. F. Sobreiro, Antonio D. Pereira
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 77, Iss 4, Pp 1-10 (2017)
European Physical Journal C
European Physical Journal C
We show that the four-dimensional Lovelock-Cartan action can be derived from a massless gauge theory for the $SO(1,3)$ group with an additional BRST trivial part. The model is originally composed by a topological sector and a BRST exact piece and has
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d9d5a586dae07af3a51ad40252b9448
http://link.springer.com/article/10.1140/epjc/s10052-017-4820-y
http://link.springer.com/article/10.1140/epjc/s10052-017-4820-y
Autor:
A. A. Tomaz, David Dudal, O. C. Junqueira, R. F. Sobreiro, C. P. Felix, G. Sadovski, D. S. Montes, Antonio D. Pereira
Publikováno v:
Physics Letters B, Vol 807, Iss, Pp 135531-(2020)
PHYSICS LETTERS B
Physics Letters
PHYSICS LETTERS B
Physics Letters
We study the Gribov problem in four-dimensional topological Yang-Mills theories following the Baulieu-Singer approach in the (anti-)self-dual Landau gauges. This is a gauge-fixed approach that allows to recover the topological spectrum, as first cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6227e265e6d302179d26516bafb83208
Publikováno v:
Physical Review
We prove that all connected n-point Green functions of four-dimensional topological Yang-Mills theories quantized in the (anti-)self-dual Landau gauges are tree-level exact, i.e., there are no radiative corrections in this gauge choice.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7268a604940e4679bf7ea629f0b39fe6
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
Physical Review
Quantum properties of topological Yang-Mills theory in (anti-)self-dual Landau gauge were recently investigated by the authors. We extend the analysis of renormalizability for two generalized classes of gauges; each of them depending on one gauge par
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a937befbb11be4636ad6675b99a7f4b0
http://arxiv.org/abs/1807.01517
http://arxiv.org/abs/1807.01517
We reconsider the renormalizability of topological Yang-Mills field theories in (anti-)self-dual Landau gauges. By employing algebraic renormalization techniques we show that there is only one independent renormalization. Moreover, due to the rich se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d41663a58a74d9bd7a6b56b08c58db81
http://arxiv.org/abs/1707.06666
http://arxiv.org/abs/1707.06666