116 citations · 370 across the 11 of their papers we have counts for
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Statistical Mechanics of Non-Abelian Learnability Transitions
Ruochen Ma, Romain Vasseur
Monitored many-body quantum systems can undergo sharp learnability transitions characterized by how much information can be learned by the observer. When the dynamics conserves a n…
Strong-to-Weak Spontaneous Symmetry Breaking in Mixed Quantum States
Leonardo A. Lessa, Ruochen Ma, Jian-Hao Zhang +3
Symmetry in mixed quantum states can manifest in two distinct forms: strong symmetry, where each individual pure state in the quantum ensemble is symmetric with the same charge, an…
Symmetry Protected Topological Phases of Mixed States in the Doubled Space
Ruochen Ma, Alex Turzillo
The interplay of symmetry and topology in quantum many-body mixed states has recently garnered significant interest. In a phenomenon not seen in pure states, mixed states can exhib…
Exploring critical systems under measurements and decoherence via Keldysh field theory
Ruochen Ma
We employ an -replica Keldysh field theory to investigate the effects of measurements and decoherence on long distance behaviors of quantum critical states. We classify differen…