The quantum effective potential of a self-dual Josephson junction array

I investigate the radiative corrections to the effective potential for an Abelian gauge theory relevant to the low-energy dynamics of self-dual Josephson junction arrays. In this theory, the two complex scalar disorder fields associated with electric and magnetic charges are minimally coupled to top...

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Bibliographic Details
Published in:Europhysics letters 2009-08, Vol.87 (3), p.37006
Main Author: Sakhi, S
Format: Article
Language:English
Subjects:
11.30.Qc
74.20.De
74.81.Fa
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Summary:I investigate the radiative corrections to the effective potential for an Abelian gauge theory relevant to the low-energy dynamics of self-dual Josephson junction arrays. In this theory, the two complex scalar disorder fields associated with electric and magnetic charges are minimally coupled to topologically massive gauge fields whose dynamics is governed by two Maxwell terms and a mixed Chern-Simons term. The fluctuating gauge fields contribution to the one-loop effective potential is evaluated and its effect on the spontaneous symmetry breaking is examined. Coupling to gapless fermions is shown to induce radiative correction terms in the effective potential which favor transitions between a superconducting state and an insulating state.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/87/37006