journal article·2021-08-16Open access

Chiral kinetic theory of anomalous transport induced by torsion

Lan-Lan Gao, Sahal Kaushik, Dmitri E. Kharzeev, Evan John Philip

Physical Review B· Volume 104· Issue 6

Abstract

In Weyl semimetals subjected to torsion, there are two different kinds of chirality: (i) The (coordinate-space) shape of the twisted crystal is chiral and (ii) the momentum space contains chiral quasiparticles. Here we construct a general kinetic theory of anomalous transport using the phase space (coordinate and momentum spaces combined) Berry curvature induced by torsion in Weyl systems. We describe how torsion generates the chiral chemical potential and thus leads to the chiral magnetic effect (CME) in the presence of a background magnetic field. We propose to measure the CME current induced by the torsion as a way to detect the anomalous coupling between the coordinate-space and momentum-space chiralities.
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Research context

OpenAlex topics: Topological Materials and Phenomena · Quantum, superfluid, helium dynamics · Quantum and electron transport phenomena

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Affiliations

Physics Department and Center for Particle Physics and Field Theory, Fudan University, Shanghai 200438, China and Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA

Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA

Center for Nuclear Theory, Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA; Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000, USA; and RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA

Computational Science Initiative, Brookhaven National Laboratory, Upton, New York 11973-5000, USA and Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA

Funding

U.S. Department of Energy

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