45 citations · 165 across the 19 of their papers we have counts for
8 papers · 1 filter
Long-time divergences in the nonlinear response of gapped one-dimensional many-particle systems
M. Fava, S. Gopalakrishnan, R. Vasseur +2
We consider one dimensional many-particle systems that exhibit kinematically protected single-particle excitations over their ground states. We show that momentum and time-resolved…
Ballistic Modes as a Source of Anomalous Charge Noise
Ewan McCulloch, Romain Vasseur, Sarang Gopalakrishnan
Steady-state currents generically occur both in systems with continuous translation invariance and in nonequilibrium settings with particle drift. In either case, thermal fluctuati…
Subdiffusive transport in the Fredkin dynamical universality class
Catherine McCarthy, Hansveer Singh, Sarang Gopalakrishnan +1
We identify a pseudolocal conserved charge in the Fredkin and Motzkin quantum spin chains and explore its consequences for the hydrodynamics of systems with Fredkin- or Motzkin-typ…
Partial yet definite emergence of the Kardar-Parisi-Zhang class in isotropic spin chains
Kazumasa A. Takeuchi, Kazuaki Takasan, Ofer Busani +3
Integrable spin chains with a continuous non-Abelian symmetry, such as the one-dimensional isotropic Heisenberg model, show superdiffusive transport with little theoretical underst…
Emergence of Navier-Stokes hydrodynamics in chaotic quantum circuits
Hansveer Singh, Ewan McCulloch, Sarang Gopalakrishnan +1
We construct an ensemble of two-dimensional nonintegrable quantum circuits that are chaotic but have a conserved particle current, and thus a finite Drude weight. The long-waveleng…
Effective Luttinger parameter and Kane-Fisher effect in quasiperiodic systems
T. J. Vongkovit, Hansveer Singh, Romain Vasseur +1
The ground states of interacting one-dimensional metals are generically Luttinger liquids. Luttinger liquid theory is usually considered for translation invariant systems. The Lutt…
Slow crossover from superdiffusion to diffusion in isotropic spin chains
Catherine McCarthy, Sarang Gopalakrishnan, Romain Vasseur
Finite-temperature spin transport in integrable isotropic spin chains (i.e., spin chains with continuous nonabelian symmetries) is known to be superdiffusive, with anomalous transp…
Non-Gaussian diffusive fluctuations in Dirac fluids
Sarang Gopalakrishnan, Ewan McCulloch, Romain Vasseur
Dirac fluids - interacting systems obeying particle-hole symmetry and Lorentz invariance - are among the simplest hydrodynamic systems; they have also been studied as effective des…