A general framework for emergent Lorentz violation in Dirac and Weyl semimetals

ORAL

Abstract

We use a general framework of Lorentz violation in quantum electrodynamics to study the breaking of emergent Lorentz symmetry in Dirac and Weyl materials. In addition to Weyl semimetals already reported in the literature, we also find Dirac nodal spectra with nodal lines and rings depending on the pattern of Lorentz violation. We further utilize this framework to characterize transport coefficients and report on the electromagnetic response due to all possible effects of Lorentz violation at leading order.

*This work was in part supported by NSF CAREER award DMR-1350663 and the College of Arts and Science at Indiana University. NM acknowledges partial support by the U.S. Department of Energy under contracts No. DEAC02-06CH11357 while at Argonne National Laboratory as well as the U.S. Department of Energy, Office of Science, Office of Work-force Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program. The SCGSR program is administered by the Oak Ridge Institute for Science and Education (ORISE) for the DOE. ORISE is managed by ORAU under contract number DE-SC0014664. TRIUMF receives federal funding via a contribution agreement with the National Research Council of Canada. MS appreciates support by FAPEMA Universal 00830/19, CNPq Produtividade 312201/2018-4, and CAPES/Finance Code 001.

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Presenters

  • Navin McGinnis

    • TRIUMF

Authors

  • Babak Seradjeh

    • Indiana University Bloomington

  • Alan Kostelecky

    • Indiana Univ - Bloomington

  • Navin McGinnis

    • TRIUMF

  • Ralf Lehnert

    • Indiana University - Bloomington

  • Marco Schreck

    • Universidade Federal do Maranhão