Curved spacetime theory of inhomogeneous Weyl materials

Long Liang, Teemu Ojanen

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

We show how the universal low-energy properties of Weyl semimetals with spatially varying time-reversal (TR) or inversion (I) symmetry breaking are described in terms of chiral fermions experiencing curved-spacetime geometry and synthetic gauge fields. By employing Clifford representations and Schrieffer-Wolff transformations, we present a systematic derivation of an effective curved-space Weyl theory with rich geometric and gauge structure. To illustrate the utility of the formalism, we give a concrete prescription of how to fabricate nontrivial curved spacetimes and event horizons in topological insulators with magnetic textures. Our theory can also account for strain-induced effects, providing a powerful unified framework for studying and designing inhomogeneous Weyl materials.
Original languageEnglish
Article number032006
Pages (from-to)1-6
JournalPHYSICAL REVIEW RESEARCH
Volume1
Issue number3
DOIs
Publication statusPublished - 16 Oct 2019
MoE publication typeA1 Journal article-refereed

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