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arXiv · 2307.14649

Twisted-Boundary-Condition Formalism for Thermal Transport and an Application to the One-Dimensional XY Spin Chain

Ryota Nakai·Taozhi Guo·Shinsei Ryu
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Abstract

We introduce and formulate the boundary condition twisted by the energy (time translation) in one-dimensional quantum many-body systems. The stiffness against this boundary condition quantifies thermal analogues of the Drude weight and the Meissner stiffness. We apply this formalism to the one-dimensional quantum XY spin chain and estimate the thermal Meissner stiffness.

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Ryota Nakai, Taozhi Guo, Shinsei Ryu. 2023-07-27. Twisted-Boundary-Condition Formalism for Thermal Transport and an Application to the One-Dimensional XY Spin Chain. https://doi.org/10.7566/jpscp.38.011175

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