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On Nieh-Yan Transport (2112.02003v2)
Published 3 Dec 2021 in hep-th and cond-mat.str-el
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.
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