5 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…
Quench spectroscopy of amplitude modes in a one-dimensional critical phase
Hyunsoo Ha, David A. Huse, Rhine Samajdar
We investigate the emergence of an amplitude (Higgs-like) mode in the gapless phase of the D XXZ spin chain. Unlike conventional settings where amplitude modes arise from sp…
Roughening Transition in Quantum Circuits
Hyunsoo Ha, David A. Huse, Grace M. Sommers
We explore a roughening phase transition that occurs in the entanglement dynamics of certain quantum circuits. Viewing entanglement as the free energy of a membrane in a circuit-de…
A theory of quasiballistic spin transport
Jeffrey Z. Song, Hyunsoo Ha, Wen Wei Ho +1
A recent work [Mierzejewski et al., Phys. Rev. B 107, 045134 (2023)] observed "quasiballistic spin transport" - long-lived and transiently ballistic modes of the magnetization dens…
Absorbing state transitions with discrete symmetries
Hyunsoo Ha, David A. Huse, Rhine Samajdar
Robust phases of matter, which remain stable under small perturbations, are of fundamental importance in statistical physics and quantum information. Recent advances in interactive…