6 papers
Strong-to-Weak Symmetry Breaking in Open Quantum Systems: From Discrete Particles to Continuum Hydrodynamics
Jacob Hauser, Kaixiang Su, Hyunsoo Ha +6
We explore the onset of spontaneous strong-to-weak symmetry breaking (SW-SSB) under U(1)-symmetric (i.e., charge-conserving) open-system dynamics. We define this phenomenon for qua…
Noncommuting zero-noise and zero-frequency limits in particle-hole symmetric fluids
Ewan McCulloch, Romain Vasseur, Sarang Gopalakrishnan
In charged fluids obeying particle-hole symmetry, such as the Dirac fluid in graphene, charge transport is diffusive despite the presence of ballistically propagating sound waves:…
Monitored Fluctuating Hydrodynamics
Sarang Gopalakrishnan, Ewan McCulloch, Romain Vasseur
We introduce a hydrodynamic framework for describing monitored classical stochastic processes. We study the conditional ensembles for these monitored processes -- i.e., we compute…
Mixed-state learnability transitions in monitored noisy quantum dynamics
Hansveer Singh, Romain Vasseur, Andrew C. Potter +1
We consider learnability transitions in monitored quantum systems that undergo noisy evolution, subject to a global strong symmetry -- i.e., in addition to the measuring apparatus,…
Superdiffusive transport in chaotic quantum systems with nodal interactions
Yu-Peng Wang, Jie Ren, Sarang Gopalakrishnan +1
We introduce a class of interacting fermionic quantum models in dimensions with nodal interactions that exhibit superdiffusive transport. We establish non-perturbatively that t…
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…