Relaxation terms for anomalous hydrodynamic transport in Weyl semimetals from kinetic theory
A bstract We consider as a model of Weyl semimetal thermoelectric transport a (3 + 1)-dimensional charged, relativistic and relaxed fluid with a U(1) V × U(1) A chiral anomaly. We take into account all possible mixed energy, momentum, electric and chiral charge relaxations, and discover which are co...
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Published in | The journal of high energy physics Vol. 2024; no. 2; pp. 71 - 26 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer Berlin Heidelberg
13.02.2024
Springer Nature B.V SpringerOpen |
Subjects | |
Online Access | Get full text |
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Summary: | A
bstract
We consider as a model of Weyl semimetal thermoelectric transport a (3 + 1)-dimensional charged, relativistic and relaxed fluid with a U(1)
V
× U(1)
A
chiral anomaly. We take into account all possible mixed energy, momentum, electric and chiral charge relaxations, and discover which are compatible with electric charge conservation, Onsager reciprocity and a finite DC conductivity. We find that all relaxations respecting these constraints necessarily render the system open and violate the second law of thermodynamics. We then demonstrate how the relaxations we have found arise from kinetic theory and a modified relaxation time approximation. Our results lead to DC conductivities that differ from those found in the literature opening the path to experimental verification. |
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ISSN: | 1029-8479 1029-8479 |
DOI: | 10.1007/JHEP02(2024)071 |