5 papers
Entanglement Spectrum Resolved by Loop Symmetries
Haruki Yagi, Zongping Gong
A rigorous analysis is presented for the entanglement spectrum of quantum many-body states possessing a higher-form group-representation symmetry generated by topological Wilson lo…
Entanglement negativity in free fermions: twisted characteristic polynomial, universal bounds, and area laws
Ryota Matsuda, Zongping Gong
We present a general and simple formula for computing the entanglement negativity in free fermions. Our formula allows for deriving several universal bounds on negativity and its r…
Threefold Way for Typical Entanglement
Haruki Yagi, Ken Mochizuki, Zongping Gong
A typical quantum state with no symmetry can be realized by letting a random unitary act on a fixed state, and the subsystem entanglement spectrum follows the Laguerre unitary ense…
Optimal spectral transport of non-Hermitian systems
Mingtao Xu, Zongping Gong, Wei Yi
The optimal transport problem seeks to minimize the total transportation cost between two distributions, thus providing a measure of distance between them. In this work, we study t…
Any Quantum Many-Body State under Local Dissipation will be Disentangled in Finite Time
Zongping Gong, Yuto Ashida
We prove that any quantum many-spin state under genetic local dissipation will be fully separable after a finite time independent of the system size. Such a sudden death of many-bo…