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- W2080863614 abstract "We consider non-Abelian semilocal strings (vortices, or vortex-strings) arising in N=2 supersymmetric U(N) gauge theory with Nf=N+~N matter hypermultiplets in the fundamental representation (quarks), and a Fayet-Iliopoulos term {xi}. We present, for the first time ever, a systematic field-theoretic derivation of the world-sheet theory for such strings, describing dynamics of both, orientational and size zero modes. Our derivation is complete in the limit, ln(L)rightarrow infty, where L is an infrared (IR) regulator in the transverse plane. In this limit the world-sheet theory is obtained exactly. It is presented by a so far unknown N=2 two-dimensional sigma model, to which we refer as the zn model, with or without twisted masses. Alternative formulations of the zn model are worked out: conventional and extended gauged formulations and a geometric formulation. We compare the exact metric of the zn model with that of the weighted CP(Nf-1) model conjectured by Hanany and Tong, through D-branes, as the world-sheet theory for the non-Abelian semilocal strings. The Hanany-Tong set-up has no parallel for the field-theoretic IR parameter and metrics of the weighted CP(Nf-1) model and zn model are different. Still their quasiclassical excitation spectra coincide." @default.
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- W2080863614 date "2011-06-10" @default.
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- W2080863614 title "Effective world-sheet theory for non-Abelian semilocal strings in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi mathvariant=bold-script>N</mml:mi><mml:mo mathvariant=bold>=</mml:mo><mml:mn>2</mml:mn></mml:math>supersymmetric QCD" @default.
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- W2080863614 doi "https://doi.org/10.1103/physrevd.83.125017" @default.
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