Author(s): G. Rosenberg and M. Franz
It has been noted a long time ago that a term of the form θ(e2/2πh)B⋅E may be added to the standard Maxwell Lagrangian without modifying the familiar laws of electricity and magnetism. θ is known to particle physicists as the “axion” field and whether or not it has a nonzero expectation value in...
[Phys. Rev. B 82, 035105] Published Wed Jul 07, 2010
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