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Two applications of axion electrodynamics

1987; American Physical Society; Volume: 58; Issue: 18 Linguagem: Inglês

10.1103/physrevlett.58.1799

1092-0145

Frank Wilczek,

Cold Atom Physics and Bose-Einstein Condensates

The equations of axion electrodynamics are studied. Variations in the axion field can give rise to peculiar distributions of charge and current. These effects provide a simple understanding of the fractional electric charge on dyons and of some recently discovered oddities in the electrodynamics of antiphase boundaries in PbTe. Some speculations regarding the possible occurrence of related phenomena in other solids are presented.