Hall viscosity and angular momentum in gapless holographic models
Name
PhysRevD.90.086007.pdf
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713.27 KB
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Author(s)
Liu, Hong
Ooguri, Hirosi
Stoica, Bogdan
Date Issued
October 2014
Journal
Physical Review D
Publisher
American Physical Society
Citation
Liu, Hong, Hirosi Ooguri, and Bogdan Stoica. “Hall Viscosity and Angular Momentum in Gapless Holographic Models.” Phys. Rev. D 90, no. 8 (October 2014). © 2014 American Physical Society
Version
Final published version
Abstract
We use the holographic approach to compare the Hall viscosity η[subscript H] and the angular momentum density J in gapless systems in 2 + 1 dimensions at finite temperature. We start with a conformal fixed point and turn on a perturbation which breaks the parity and time-reversal symmetries via gauge and gravitational Chern-Simons couplings in the bulk. While the ratio of η[subscript H] and J shows some universal properties when the perturbation is slightly relevant, we find that the two quantities behave differently in general. In particular, η[subsript H] depends only on infrared physics, while J receives contributions from degrees of freedom at all scales.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.90.086007
