Anomalous Axion Interactions and Topological Currents in Dense Matter

Details Anomalous Axion Interactions and Topological Currents in Dense Matter Anomalous Axion Interactions and Topological Currents in Dense Matter

2005-05-10

arxiv.org/abs/hep-ph/0505072v1

Phys.Rev. D72 (2005) 045011

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages

Scientific paper

10.1103/PhysRevD.72.045011

Recently an effective Lagrangian for the interactions of photons, Nambu-Goldstone bosons and superfluid phonons in dense quark matter has been derived using anomaly matching arguments. In this paper we illuminate the nature of certain anomalous terms in this Lagrangian by an explicit microscopic calculation. We also generalize the corresponding construction to introduce the axion field. We derive an anomalous axion effective Lagrangian describing the interactions of axions with photons and superfluid phonons in the dense matter background. This effective Lagrangian, among other things, implies that an axion current will be induced in the presence of magnetic field. We speculate that this current may be responsible for the explanation of neutron star kicks.

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