1. Repositório Institucional da Universidade Federal de Sergipe - RI/UFS
2. PRODUÇÃO CIENTÍFICA
3. DFI - Departamento de Física (São Cristóvão)
4. DFI - Artigos de periódicos

Document Type:	Artigo
Title:	Dynamical symmetry restoration for a higher-derivative four-fermion model in an external electromagnetic field
Authors:	Elizalde, E. Gavrilov, Serguei Odintsov, S. D. Shil'nov, Yu. I.
Issue Date:	2000
Resumo :	A four-fermion model with additional higher-derivative terms is investigated in an external electromagnetic field. The effective potential in the leading order of large-N expansion is calculated in external constant magnetic and electric fields. It is shown that, in contrast to the former results concerning the universal character of "magnetic catalysis" in dynamical symmetry breaking, in the present higher-derivative model the magnetic field restores chiral symmetry broken initially on the tree level. Numerical results describing a second-order phase transition that accompanies the symmetry restoration at the quantum level are presented.
Keywords:	Magnetic field Broken symmetry Finite-temperature Electromagnetic field Campo eletromagnético
ISSN:	0103-9733 1678-4448
Is part of:	Brazilian Journal of Physics
Language:	eng
Publisher / Institution :	Sociedade Brasileira de Física
Citation:	ELIZALDE, E. et al. Dynamical symmetry restoration for a higher-derivative four-fermion model in an external electromagnetic field. Brazilian Journal of Physics, São Paulo, v. 30, n. 3, p. 573-580, set. 2000. Disponível em: https://www.scielo.br/j/bjp/a/ZtJvbZMVhStHsq5Jymwq9Cn/?format=pdf&lang=en. Acesso em: 15 out. 2024.
License:	Creative Commons Atribuição-NãoComercial 4.0 Internacional (CC BY-NC 4.0)
URI:	https://ri.ufs.br/jspui/handle/riufs/20277
Appears in Collections:	DFI - Artigos de periódicos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.