Magnetic field induced corrections to the NJL model coupling constant from vacuum polarization

Abstract

Magnetic field dependent corrections for the coupling constant of the Nambu-Jona-Lasinio model are calculated by considering the one-loop background field method. These coupling constants turn out to break chiral and flavor symmetries and they lead to a slight improvement of the numerical values of the up and down quark condensates when compared to results from lattice QCD. The corresponding magnetic field dependencies of the neutral pion and kaon masses are also presented and compared with available lattice QCD calculations. The resulting magnetic field correction to the $\eta -{\eta }^{\prime }$ mixing angle is also estimated.

arXiv comment22 pages, 11 figures, revised manuscript, accepted for publication

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Cited by in corpus (5)

• Charged pseudoscalar and vector meson masses under strong magnetic fields in an extended NJL model
• Chiral condensates and screening masses of neutral pseudoscalar mesons from lattice QCD at physical quark masses
• Quark-antiquark states of the lightest scalar mesons within the Nambu-Jona-Lasinio model with flavor-dependent coupling constants
• The Yukawa potential under weak magnetic field
• Symmetry breaking effects in pion couplings to constituent quark currents