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quant-ph2026
Measurement-Induced Phase Transitions and Logical-Space Localization in Floquet Monitored Clifford Circuits
Hyunsoo Ha, David A. Huse
An entanglement transition can occur without a corresponding transition in purification. We demonstrate this separation in spatially local monitored Clifford circuits with a fixed…
quant-ph2026
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…
cond-mat.str-el2026
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…