Zobrazeno 1 - 10
of 77
pro vyhledávání: '"R. Bufalo"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 12, Pp 1-9 (2024)
Abstract This work examines the dynamical mass generation for the photon in Rarita–Schwinger QED. We focus our attention on the cases of $$\omega =2,3$$ ω = 2 , 3 dimensional spacetime. In these frameworks, it is well known that in the usual QED,
Externí odkaz:
https://doaj.org/article/a6521d089c354af1bfeb2da3fb804040
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-14 (2024)
Abstract In this work, we study the perturbative generation of the gauge invariant effective action for the non-Abelian gauge field in a $$(2+1)$$ ( 2 + 1 ) -dimensional spacetime. We present a detailed analysis of the two, three and four-point funct
Externí odkaz:
https://doaj.org/article/d7a30e065a404142b26a81d3a26ca293
Autor:
R. Bufalo, Nathan B. Xavier
Publikováno v:
Physics Letters B, Vol 860, Iss , Pp 139167- (2025)
We study in this paper non-relativistic properties of the non-hermitian and PT symmetric QED, in special the Pauli-Schrödinger Hamiltonian. It is shown that the scattering potential computed in terms of the Born approximation receives phenomenologic
Externí odkaz:
https://doaj.org/article/e8c4fe6ce9524e8e987ee48e3ec9126e
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 12, Pp 1-8 (2023)
Abstract In this paper we examine the pair production through the Breit–Wheeler process $$\gamma ~\gamma \rightarrow e^+ e^-$$ γ γ → e + e - in a thermal background. We compute the thermal contribution to the Breit–Wheeler differential cross
Externí odkaz:
https://doaj.org/article/03beb9878b37409d87efa016fb7fe579
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 1, Pp 1-11 (2023)
Abstract 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
Externí odkaz:
https://doaj.org/article/70520dd7197d475dacb883cde85e0730
Autor:
R. Bufalo, A.F. Santos
Publikováno v:
Physics Letters B, Vol 832, Iss , Pp 137231- (2022)
In this paper we examine the thermal effects of the vacuum Cherenkov radiation in a Lorentz- and CPT-violating electrodynamics. We compute the thermal contribution to the Cherenkov radiation rate within the Thermofield Dynamics approach. Since the mo
Externí odkaz:
https://doaj.org/article/54011a325b2c4be686efc079830a00c7
Autor:
D. Jackson, R. Bufalo
Publikováno v:
Revista Brasileira de Ensino de Física, Vol 44 (2022)
Teorias não locais são, por definição, aquelas nas quais elementos da teoria podem estar correlacionados, ou podem interagir, em diferentes pontos do espaço-tempo sem nenhuma mediação. A Mecânica Quântica é um exemplo de teoria não local,
Externí odkaz:
https://doaj.org/article/bb681599a89e4f3b86a8e92079139527
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 12, Pp 1-12 (2020)
Abstract In this paper, we study the one-loop induced photon’s effective action in the very special relativity electrodynamics in $$(2+1)$$ ( 2 + 1 ) spacetime ( $$\hbox {VSR}$$ VSR – $$\hbox {QED}_{3}$$ QED 3 ). Due to the presence of new nonloc
Externí odkaz:
https://doaj.org/article/120593a2729a42859dd37fd91f8f5aed
Autor:
R. Bufalo, S. Upadhyay
Publikováno v:
Physics Letters B, Vol 772, Iss C, Pp 420-425 (2017)
In this paper we propose a very special relativity (VSR)-inspired description of the axion electrodynamics. This proposal is based upon the construction of a proper study of the SIM(2)–VSR gauge-symmetry. It is shown that the VSR nonlocal effects g
Externí odkaz:
https://doaj.org/article/95f77d191a0b4048bbe2af2ffaa788d6
Autor:
R. Bufalo
Publikováno v:
Physics Letters B, Vol 746, Iss , Pp 251-256 (2015)
In this work we discuss the properties of a modified Born–Infeld electrodynamics in the framework of very special relativity (VSR). This proposal allows us to study VSR mass effects in a gauge-invariant context of nonlinear electrodynamics. It is a
Externí odkaz:
https://doaj.org/article/2d88833235c7425e969f8cb0df30d513