387 citations · 1.6k across the 70 of their papers we have counts for
8 papers · 1 filter
Kinetic theory of spin diffusion and superdiffusion in XXZ spin chains
Sarang Gopalakrishnan, Romain Vasseur
We address the nature of spin transport in the integrable XXZ spin chain, focusing on the isotropic Heisenberg limit. We calculate the diffusion constant using a kinetic picture ba…
Evolution of entanglement spectra under generic quantum dynamics
Po-Yao Chang, Xiao Chen, Sarang Gopalakrishnan +1
We characterize the early stages of the approach to equilibrium in isolated quantum systems through the evolution of the entanglement spectrum. We find that the entanglement spectr…
A self-consistent Hartree-Fock approach to Many-Body Localization
Simon A. Weidinger, Sarang Gopalakrishnan, Michael Knap
In this work, we develop a self-consistent Hartree-Fock approach to theoretically study the far-from-equilibrium quantum dynamics of interacting fermions, and apply this approach t…
Quantum criticality in Ising chains with random hyperuniform couplings
Philip J. D. Crowley, C. R. Laumann, Sarang Gopalakrishnan
We study quantum phase transitions in transverse-field Ising spin chains in which the couplings are random but hyperuniform, in the sense that their large-scale fluctuations are su…
Hydrodynamics of operator spreading and quasiparticle diffusion in interacting integrable systems
Sarang Gopalakrishnan, David A. Huse, Vedika Khemani +1
We address the hydrodynamics of operator spreading in interacting integrable lattice models. In these models, operators spread through the ballistic propagation of quasiparticles,…
Operator growth and eigenstate entanglement in an interacting integrable Floquet system
Sarang Gopalakrishnan
We analyze a simple model of quantum dynamics, which is a discrete-time deterministic version of the Frederickson-Andersen model. We argue that this model is integrable, with a qua…