Disorder-order interface propagating over the ferromagnetic ground state in the transverse field Ising chain

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.