paper

Quark condensate in a magnetic field

arXiv:hep-ph/9703201 · doi:10.1016/S0370-2693(97)00441-3

Abstract

We study the dependence of quark condensate 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, .

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