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When matter in different phases is brought into contact, an interface with unexpected properties can emerge. In the transverse-field Ising chain, the authors investigate the interface formed by joining a disordered state with a ferromagnetically ordered one. They show that, within this emergent region, order parameters and entanglement asymmetries of subsystems exhibit universal behavior. Correlations extend across the entire region, and the Wigner--Yanase skew information of large subsystems reveals macroscopic multipartite entanglement.
Marić et al. (Wed,) studied this question.