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VOLUME 75 (2002) | ISSUE 6 | PAGE 323
Low temperature effective electromagnetism in superfluid 3He-A
PACS: 11.15.-q, 11.90.+t, 67.57.-z
Abstract
A general low temperature effective action for the order parameter in the superfluid phase A of helium 3 is derived. In a symmetric case, when Fermi velocity equals transversal velocity of low energy fermionic quasiparticles, the action is the standard relativistic electromagnetic action.