Articulo
Pion mass modification in a weak magnetic field
Astronomische Nachrichten
Registro en:
1150471
1150471
Autor
Ayala, Alejandro
Farias, Ricardo
Hernandez, Saul
Hernandez, Luis
Paret, Daryel
Zamora, Renato
Institución
Resumen
We use the linear sigma model coupled to quarks with an explicit symmetry breaking term, to compute the one-loop magnetic modification of the neutral pion mass, in the weak field approximation. The self-energy, the effective, and the meson self-coupling are computed at one-loop order. We obtain a decreasing behavior for the neutral pion mass as the magnetic field increases. This result is in good agreement bothwith other effectivemodels and lattice quantum
chromodynamics (QCD) results.