Zobrazeno 1 - 10
of 196
pro vyhledávání: '"Ghasemkhani, M."'
In this work, we study the perturbative generation of the gauge invariant effective action for the non-Abelian gauge field in a $(2+1)$-dimensional spacetime. We present a detailed analysis of the two, three and four-point functions in order to deter
Externí odkaz:
http://arxiv.org/abs/2404.10134
In this paper, we study the one-loop induced effective action for a non-abelian gauge field in the very special relativity (VSR) framework in a $(2+1)$-dimensional spacetime. We show that there are new graphs contributing to the amplitudes of gluon $
Externí odkaz:
http://arxiv.org/abs/2207.00639
In this paper, we examine the CP-violating term of the Euler-Heisenberg action. We focus in the aspects related with the generation of such a term from a QED-like model in terms of the effective action approach. In particular, we show that the genera
Externí odkaz:
http://arxiv.org/abs/2204.02126
Autor:
Bufalo, R., Ghasemkhani, M.
Publikováno v:
Modern Physics Letters A, 2250002 (2022)
In this note, we revise the problem of the axial anomaly in the framework of very special relativity following Fujikawa's path integral approach. We show nonperturbatively that no VSR contribution is present in the path integral measure in $(3+1)$-di
Externí odkaz:
http://arxiv.org/abs/2201.09608
In this paper, we examine the behaviour of the Euler-Heisenberg effective action in the presence of a novel axial coupling among the gauge field and the fermionic matter. This axial coupling is responsible to induce a CP-violating term in the extende
Externí odkaz:
http://arxiv.org/abs/2109.11411
In this paper, we examine the problem of anomalies of the fermionic currents in the context of the very special relativity (VSR). We consider the VSR contributions to the triangle amplitude $\left\langle J_{5}^{\lambda} J^{\mu} J^{\nu} \right\rangle
Externí odkaz:
http://arxiv.org/abs/2011.10649
In this paper, we study the one-loop induced photon's effective action in the very special relativity electrodynamics in $(2+1)$ spacetime (VSR-QED$_{3}$). Due to the presence of new nonlocal couplings resulting from the VSR gauge symmetry, we have a
Externí odkaz:
http://arxiv.org/abs/2004.02176
Autor:
Bufalo, R., Ghasemkhani, M.
Publikováno v:
Phys. Rev. D 100, 065024 (2019)
In this paper we compute the high-temperature effective Lagrangian for the quantum electrodynamics defined in the framework of Very Special Relativity (VSR). The main aspect of the VSR setting is that it modifies the gauge invariance, admitting now d
Externí odkaz:
http://arxiv.org/abs/1909.06466
Publikováno v:
Phys. Rev. D 101, 025001 (2020)
In this paper, we consider the evaluation of the effective action for photons coupled to charged scalar fields in the framework of a $(2+1)$-dimensional noncommutative spacetime. In order to determine the noncommutative Maxwell Lagrangian density, we
Externí odkaz:
http://arxiv.org/abs/1909.04941
Publikováno v:
Phys. Rev. D 97, 125007 (2018)
In this paper, we study the quantum behavior of the noncommutative Jackiw-Pi model. After establishing the Becchi-Rouet-Store-Tyutin (BRST) invariant action, the perturbative renormalizability is discussed, allowing us to introduce the renormalized m
Externí odkaz:
http://arxiv.org/abs/1804.07484