Once again on electromagnetic properties of a domain wall interacting with charged fermions

Details Once again on electromagnetic properties of a domain wall interacting with charged fermions Once again on electromagnetic properties of a domain wall interacting with charged fermions

2001-02-19

arxiv.org/abs/hep-ph/0102239v1

Phys.Rev. D63 (2001) 125012

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages

Scientific paper

10.1103/PhysRevD.63.125012

The response to a magnetic flux is considered of the vacuum state of charged Dirac fermions interacting with a domain wall made of a neutral spinless field in (3+1) dimensions with the fermion mass having a phase variation across the wall. It is pointed out that due to simple C parity arguments the spontaneous magnetization for this system is necessarily zero, thus invalidating some claims to the contrary in the literature. The cancellation of the spontaneous magnetization is explicitly demonstrated in a particular class of models. The same calculation produces a general formula for the electric charge density induced by the magnetic flux -- an effect previously discussed in the literature for axionic domain walls. The distribution of the induced charge is calculated in specific models.

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