Thermal Hall conductance and a relative topological invariant of gapped two-dimensional systems
Abstract
We derive a Kubo-like formula for the thermal Hall conductance of a 2d lattice systems which is free from ambiguities associated with the definition of energy magnetization. We use it to define a relative topological invariant of gapped 2d lattice systems at zero temperature. Up to a numerical factor, it can be identified with the difference of chiral central charges for the corresponding edge modes. This establishes the bulk-boundary correspondence for the chiral central charge. Here, we also show that for any local commuting projector Hamiltonian, the relative chiral central charge vanishes, while for free fermionic systems, it is related to the zero-temperature electric Hall conductance via the Wiedemann-Franz law.
- Authors:
-
- California Institute of Technology (CalTech), Pasadena, CA (United States)
- Publication Date:
- Research Org.:
- California Institute of Technology (CalTech), Pasadena, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1762782
- Grant/Contract Number:
- SC0011632
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 101; Journal Issue: 4; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Edge states; Quantum phase transitions; Thermal Hall effect; Topological phases of matter; Transport phenomena
Citation Formats
Kapustin, Anton, and Spodyneiko, Lev. Thermal Hall conductance and a relative topological invariant of gapped two-dimensional systems. United States: N. p., 2020.
Web. doi:10.1103/physrevb.101.045137.
Kapustin, Anton, & Spodyneiko, Lev. Thermal Hall conductance and a relative topological invariant of gapped two-dimensional systems. United States. https://doi.org/10.1103/physrevb.101.045137
Kapustin, Anton, and Spodyneiko, Lev. Fri .
"Thermal Hall conductance and a relative topological invariant of gapped two-dimensional systems". United States. https://doi.org/10.1103/physrevb.101.045137. https://www.osti.gov/servlets/purl/1762782.
@article{osti_1762782,
title = {Thermal Hall conductance and a relative topological invariant of gapped two-dimensional systems},
author = {Kapustin, Anton and Spodyneiko, Lev},
abstractNote = {We derive a Kubo-like formula for the thermal Hall conductance of a 2d lattice systems which is free from ambiguities associated with the definition of energy magnetization. We use it to define a relative topological invariant of gapped 2d lattice systems at zero temperature. Up to a numerical factor, it can be identified with the difference of chiral central charges for the corresponding edge modes. This establishes the bulk-boundary correspondence for the chiral central charge. Here, we also show that for any local commuting projector Hamiltonian, the relative chiral central charge vanishes, while for free fermionic systems, it is related to the zero-temperature electric Hall conductance via the Wiedemann-Franz law.},
doi = {10.1103/physrevb.101.045137},
journal = {Physical Review. B},
number = 4,
volume = 101,
place = {United States},
year = {Fri Jan 31 00:00:00 EST 2020},
month = {Fri Jan 31 00:00:00 EST 2020}
}
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Works referencing / citing this record:
Resonant thermal Hall effect of phonons coupled to dynamical defects
journal, November 2022
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