156 citations · 528 across the 16 of their papers we have counts for
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Anomalous low-frequency conductivity in easy-plane XXZ spin chains
Utkarsh Agrawal, Sarang Gopalakrishnan, Romain Vasseur +1
In the easy-plane regime of XXZ spin chains, spin transport is ballistic, with a Drude weight that has a discontinuous fractal dependence on the value of the anisotropy $Δ= \cos πλ…
Universality and Quantum Criticality in Quasiperiodic Spin Chains
Utkarsh Agrawal, Sarang Gopalakrishnan, Romain Vasseur
Quasiperiodic systems are aperiodic but deterministic, so their critical behavior differs from that of clean systems as well as disordered ones. Quasiperiodic criticality was previ…
Generalized hydrodynamics, quasiparticle diffusion, and anomalous local relaxation in random integrable spin chains
Utkarsh Agrawal, Sarang Gopalakrishnan, Romain Vasseur
We study the nonequilibrium dynamics of random spin chains that remain integrable (i.e., solvable via Bethe ansatz): because of correlations in the disorder, these systems escape l…