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)
