3 papers
hep-ph2025
Magnetic field induced anomalous pion couplings
Fabio L. Braghin, Marcelo Loewe, Cristian Villavicencio
Effective pion-constituent quark couplings induced by relatively weak magnetic fields are calculated in the framework based in Weinberg's large Nc Effective Field Theory. These cou…
hep-ph2023
Magnetic field dependence of the neutral pion longitudinal screening mass in the linear sigma model with quarks
Alejandro Ayala, Ricardo L. S. Farias, L. A. Hernández +4
We use the linear sigma model with quarks to study the magnetic-field-induced modifications on the longitudinal screening mass for the neutral pion at one-loop level. The effects o…
hep-ph2023
Magnetic and density effects on the nucleon axial coupling
C. A. Dominguez, M. Loewe, C. Villavicencio +1
Using appropriate QCD finite energy sum rules, we discuss the influence of an external magnetic field and baryonic density on the axial-vector coupling constant . This scena…