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41 papers · 1 filter
Effective World-Sheet Theory for Non-Abelian Semilocal Strings in N = 2 Supersymmetric QCD
M. Shifman, W. Vinci, A. Yung
We consider non-Abelian semilocal strings (vortices, or vortex-strings) arising in N=2 supersymmetric U(N) gauge theory with Nf=N+Ñ matter hypermultiplets in the fundamental repres…
Non-Abelian Duality and Confinement: from N=2 to N=1 Supersymmetric QCD
M. Shifman, A Yung
Recently we discovered and discussed non-Abelian duality in the quark vacua of N=2 super-Yang-Mills theory with the U(N) gauge group and N_f flavors (N_f>N). Both theories from the…
Non-Abelian Monopoles in the Higgs Phase
Muneto Nitta, Walter Vinci
We use the moduli matrix approach to study the moduli space of 1/4 BPS kinks supported by vortices in the Higgs phase of N = 2 supersymmetric U(N) gauge theories when non-zero mass…
Perturbative Aspects of Heterotically Deformed CP(N-1) Sigma Model. I
Xiaoyi Cui, M. Shifman
In this paper we begin the study of renormalizations in the heterotically deformed N=(0,2) CP(N-1) sigma models. In addition to the coupling constant g^2 of the undeformed N=(2,2)…
Large-N Solution of the Heterotic Weighted Non-Linear Sigma-Model
Peter Koroteev, Alexander Monin, Walter Vinci
We study a heterotic two-dimensional N=(0,2) gauged non-linear sigma-model whose target space is a weighted complex projective space. We consider the case with N positively and N^~…
On the Null Energy Condition and Causality in Lifshitz Holography
Carlos Hoyos, Peter Koroteev
We use a WKB approximation to establish a relation between the wavefront velocity in a strongly coupled theory and the local speed of light in a holographic dual, with our main foc…