Symmetry enforcing entanglement at high temperatures
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论文直接证明局域相互作用多体系统中，对称性约束能够阻止高温热态纠缠的突然消失，命中多体纠缠与热化问题。
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Author(s): Amir-Reza Negari, Leonardo A. Lessa, and Subhayan Sahu Many-body quantum systems with local interactions undergo “sudden death of entanglement” at high temperatures, whereby thermal states become classical mixtures of product states. We investigate whether symmetry constraints can prevent this phenomenon. We prove that strongly symmetric thermal states … [Phys. Rev. A 114, 022458] Published Thu Aug 27, 2026