Theoretical High Energy Seminar – Niels Bohr Institute - University of Copenhagen

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Theoretical High Energy Seminar

Abstract: I review vortices in superconductors and in SUSY gauge theories with N=2 SUSY broken to N=1. These are identified by fixing the characteristic length scales of the superconductor to be the inverse supermultiplet masses of the gauge theory. I find that soft SUSY breaking always implies type I superconductivity. I argue that this differs from QCD, and so SUSY gauge theories may have radically different ground states from QCD. For example, following N. K. Nielsen and Olesen, the QCD vacua may, like the Abrikosov lattice of a type II superconductor, have structure which breaks the translational invariance whereas the ground state of the SUSY theory will always be translationally invariant.