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quant-ph2026
Peak-valley mechanism for Hilbert space fragmentation
Jianlong Fu, Hoi Chun Po
Ergodicity breaking in isolated systems has emerged as an important frontier in the study of quantum many-body physics. While generic Hamiltonians are expected to obey the eigensta…
quant-ph2025
Stabilizer Perturbation Theory: A Systematic Construction via Schrieffer-Wolff Transformation
Xuzhe Ying, Kangle Li, Hoi Chun Po
Perturbation theories provide valuable insights on quantum many-body systems. Systems of interacting particles, like electrons, are often treated perturbatively around exactly solv…
quant-ph2025
Unitary network: Tensor network unitaries with local unitarity
Wenqing Xie, Seishiro Ono, Hoi Chun Po
We introduce unitary network, an oriented architecture for tensor network unitaries. Compared to existing architectures, in a unitary network each local tensor is required to be a…