On Nieh-Yan Transport
High Energy Physics - Theory
2022-03-29 v2 Strongly Correlated Electrons
Abstract
We study nondissipative transport induced by the Nieh-Yan anomaly. After computing the torsional terms in the equilibrium partition function using transgression, we find the constitutive relations for the covariant axial-vector, heat, stress, and spin currents. A number of new transport effects are found, driven by background torsion and the spin chemical potential. Torsional constitutive relations in two-dimensional systems are also analyzed.
Keywords
Cite
@article{arxiv.2112.02003,
title = {On Nieh-Yan Transport},
author = {Manuel Valle and Miguel A. Vazquez-Mozo},
journal= {arXiv preprint arXiv:2112.02003},
year = {2022}
}
Comments
21 pages, no figures. v2: discussion of general aspects of the Nieh-Yan anomaly expanded, references added, and typos corrected. It matches the version to be published in Journal of High Energy Physics