Superdiffusion in One-Dimensional Quantum Lattice Models
Superdiffusion in One-Dimensional Quantum Lattice Models
We identify a class of one-dimensional spin and fermionic lattice models that display diverging spin and charge diffusion constants, including several paradigmatic models of exactly solvable, strongly correlated many-body dynamics such as the isotropic Heisenberg spin chains, the Fermi-Hubbard model, and the $t\text{\ensuremath{-}}J$ model at the integrable point. Using the …