Propagation of axions in a strongly magnetized medium
A. V. Borisov, P. E. Sizin
Abstract
The polarization operator of an axion in a degenerate gas of electrons occupying the ground-state Landau level in a superstrong magnetic field H H0=me2c3/e =4.41· 1013 G is investigated in a model with a tree-level axion-electron coupling. It is shown that a dynamic axion mass, which can fall within the allowed range of values (10-5 eV ma 10-2 eV), is generated under the conditions of strongly magnetized neutron stars. As a result, the dispersion relation for axions is appreciably different from that in a vacuum.
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