Currents on Superconducting Strings in AN Unusual Environment

Details Currents on Superconducting Strings in AN Unusual Environment Currents on Superconducting Strings in AN Unusual Environment

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006fuin.conf..229m&link_type=abstract

FUNDAMENTAL INTERACTIONS. Proceedings of the 20th Lake Louise Winter Institute. Held 20-26 February 2005 in Lake Louise, Alberta

Physics

Condensed Matter

Superconductivity

Scientific paper

It is well known that fermion zero modes concentrated in the core of a topological defect can endow the defect with highly nontrivial physical properties. A particular example of this phenomenon due to Witten, is the so-called string superconductivity, when an application of an electric field along the string leads to an appearance of a persistent current in the string direction. In this talk, I will show that a current along the string can also be induced by placing the string in an environment with a non-zero fermion chemical potential and temperature. The resulting current is exactly calculable and topological in nature. I will also discuss how the interest in this problem was motivated by the study of topological defects in dense quark matter.

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