2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/207749We study the dependence of quark condensate $Σ$ on an external magnetic field. For weak fields, it rises linearly with the field. Pion mass and residue are also shifted so that the Gell-Mann - Oakes - Renner relation is satisfied. In the strong field region, $Σ(H) \propto (eH)^{3/2}$.13 pages LaTeX, 5 postscript files for figuresHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext