13–17 sept. 2021
São José dos Campos, Brazil
Fuseau horaire America/Sao_Paulo

Nambu-Jona-Lasinio model at strong constant magnetic field

15 sept. 2021, 16:03
1m
São José dos Campos, Brazil

São José dos Campos, Brazil

Instituto Tecnológico de Aeronáutica
Poster Poster

Orateur

M. Thiago Henrique Moreira (Universidade Federal de Goiás)

Description

In this work we calculate corrections to the NJL model coupling constant in the presence of a uniform magnetic field. Starting with the Nambu-Jona-Lasinio Lagrangian coupled with a U(1) gauge field, namely a magnetic field, the background field method is employed. By expanding the quark determinant in terms of the quark bilinears we show that the first-order term provides a correction to the quark masses that corresponds to the one from the gap equation.
The second-order term of the expansion provides a correction to the NJL coupling constant, which decreases with increasing magnetic field.

Auteur principal

M. Thiago Henrique Moreira (Universidade Federal de Goiás)

Documents de présentation