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Entanglement and correlation spreading in non-Hermitian spin chains

Entanglement and correlation spreading in non-Hermitian spin chains

Non-Hermitian quantum many-body systems are attracting widespread interest for their exotic properties, including unconventional quantum criticality and topology. Here, we study how quantum information and correlations spread under a quantum quench generated by a prototypical non-Hermitian spin chain. Using the mapping to fermions, we solve exactly the problem and compute …