In the large-N limit of the quantum O(N) model, post-quench entanglement entropy shows logarithmic corrections and gapless modes at and below the dynamical critical point, with scaling set by the dynamical exponent.
Laflorencie, Quantum entanglement in condensed matter systems, Physics Reports646, 1–59 (2016)
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Entanglement entropy across the dynamical phase transition in the quantum $\mathcal{O}(N)$ model
In the large-N limit of the quantum O(N) model, post-quench entanglement entropy shows logarithmic corrections and gapless modes at and below the dynamical critical point, with scaling set by the dynamical exponent.