paper

Chiral Lagrangian from Duality and Monopole Operators in Compactified QCD

arXiv:1604.06108 · doi:10.1103/PhysRevLett.117.081601

Abstract

We show that there exists a special compactification of QCD on in which the theory has a domain where continuous chiral symmetry breaking is analytically calculable. We give a microscopic derivation of the chiral lagrangian, the chiral condensate, and the Gell-Mann-Oakes-Renner relation . Abelian duality, monopole operators, and flavor-twisted boundary conditions, or a background flavor holonomy, play the main roles. The flavor twisting leads to the new effect of fractional jumping of fermion zero modes among monopole-instantons. Chiral symmetry breaking is induced by monopole-instanton operators, and the Nambu-Goldstone pions arise by color-flavor transmutation from gapless "dual photons". We also give a microscopic picture of the "constituent quark" masses. Our results are consistent with expectations from chiral perturbation theory at large , and yield strong support for adiabatic continuity between the small- and large- regimes. We also find concrete microscopic connections between and supersymmetric gauge theory dynamics and non-supersymmetric QCD dynamics.

v1: 6 pages, 2 figures

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