3 papers
cond-mat.stat-mech2026
Long-range correlation and the spin conductivity in the XXZ chain from ballistic macroscopic fluctuation theory
Shinya Ae
Based on the ballistic macroscopic fluctuation theory, the integration of the spin correlation function (spin conductivity) is analyzed for the spin-1/2 XXZ chain in the critical r…
cond-mat.stat-mech2023
Infinite temperature spin dc conductivity of the spin-1/2 XXZ chain
Shinya Ae
Using the Bethe ansatz method and the TBA equations for the higher spin integrable XXZ chain, the regular zero frequency contribution to the spin current correlation (spin dc condu…
cond-mat.stat-mech2023
Spin Drude weight for the integrable XXZ chain with arbitrary spin
Shinya Ae, Kazumitsu Sakai
Using generalized hydrodynamics (GHD), we exactly evaluate the finite-temperature spin Drude weight at zero magnetic field for the integrable XXZ chain with arbitrary spin and easy…