Confinement transition of the orthogonal semimetal: Emergent QCD3 and SO(5) symmetry.

ORAL

Abstract

We discuss a model of Dirac fermions coupled to an Ising gauge theory, for which recent Monte Carlo simulations have observed a direct and continuous transition into a confined, symmetry broken phase. This result was surprising since, without fine tuning of parameters, a first order or split transition is expected, with symmetry breaking preceding confinement. We develop a field theory description of the direct transition involving a nonabelian (SU(2)) gauge group and identify its consequences. In particular, an emergent SO(5) symmetry is predicted at the transition. We verify this prediction in quantum Monte Carlo simulations and contrast our findings with the standard Gross-Neveau transition.

–

Presenters

  • Snir Gazit

    University of California, Berkeley, Department of Physics, University of California, Univ of California - Berkeley, Physics, University of California, Berkeley, Physics, Univ of California - Berkeley

Authors

  • Snir Gazit

    University of California, Berkeley, Department of Physics, University of California, Univ of California - Berkeley, Physics, University of California, Berkeley, Physics, Univ of California - Berkeley

  • Chong Wang

    Harvard Univ, Physics, Harvard University, Harvard University

  • Fakher Assaad

    University of Wurzburg, Institut für Theoretische Physik und Astrophysik, Universität Würzburg, University Wuerzburg, Universität Würzburg, Physics, Universität Würzburg, University of Würzburg

  • Subir Sachdev

    Harvard University, Physics, Harvard University, Harvard Univ, Physics, Harvard Univ, Department of Physics, Harvard University

  • Ashvin Vishwanath

    Physics, Harvard University, Physics, Harvard university, Harvard Univ, Physics, Harvard, Harvard University