Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-01-29
Phys.Rev.D79:085015,2009
Physics
High Energy Physics
High Energy Physics - Theory
38 pages, typos corrected
Scientific paper
10.1103/PhysRevD.79.085015
We continue the study of heterotic non-Abelian BPS-saturated flux tubes (strings). Previously, such solutions were obtained [1] in a particular U(2) gauge theory: N=2 supersymmetric QCD deformed by superpotential terms of a special type breaking N=2 supersymmetry down to N=1. Here we generalize the previous results to U(N) gauge theories. As was suggested by Edalati and Tong [2], the string world sheet theory is a heterotic N=(0,2) sigma model, with the CP(N-1) target space for bosonic fields and an extra right-handed fermion which couples to the fermion fields of the N=(2,2) CP(N-1) model. We derive the heterotic N=(0,2) world sheet model directly from the U(N) bulk theory. Parameters of the bulk theory are related to those of the world sheet theory. Qualitatively this relation turns out to be the same as in the U(2) case.
Bolokhov Pavel A.
Shifman Michael
Yung Alexei
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