We investigate finite temperature spin transport in one spatial dimension by considering the spin-spin correlation function of the Hubbard model in the limiting case of infinitely strong repulsion. We find that in the absence of a magnetic field the transport is diffusive, and derive the spin diffusion constant. Our approach is based on asymptotic analysis of a Fredholm determinant representation. The obtained results are in agreement with Generalized Hydrodynamics approach.
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- 1 Uniwersytet Warszawski / University of Warsaw [UW]
- 2 London Institute for Mathematical Sciences [LIMS]
- 3 Eötvös Loránd Tudományegyetem / Eötvös Loránd University [ELTE]
- 4 Université Paris-Saclay / University of Paris-Saclay