In the quench dynamics of the transverse-field Ising chain, the quantum Fisher information density at a critical time grows logarithmically with system size, signaling a multipartite-entanglement-driven dynamical phase transition.
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Dynamical quantum phase transition with divergent multipartite entanglement
In the quench dynamics of the transverse-field Ising chain, the quantum Fisher information density at a critical time grows logarithmically with system size, signaling a multipartite-entanglement-driven dynamical phase transition.