Theory using dynamical high-temperature expansion and optical-lattice hard-core boson experiments show excellent agreement on spin diffusion constants in the finite-temperature square-lattice XY model.
Reimann, Dynamical typicality of isolated many-body quantum systems, Phys
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Finite-temperature spin diffusion in the two-dimensional XY model
Theory using dynamical high-temperature expansion and optical-lattice hard-core boson experiments show excellent agreement on spin diffusion constants in the finite-temperature square-lattice XY model.