Talk presented by George Koutsoumbas

Parallel Session: Electroweak Phase Transition

Thursday July 1st, 18.20 - 18.40, Room 6

Even-flavor QED3 in an external magnetic field

Abstract: We discuss the role of an external magnetic field on the dynamically generated fermion mass in $QED$ in three dimensions. We show that for weak fields this mass increases quadratically with increasing field, while at strong fields one crosses over to a mass scaling logarithmically with the external field. We also confirm this type of scaling behavior on the lattice with quenched fermions. Zero and finite temperature results are presented.

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