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.
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Measuring and communicating outcomes from central modes in a harmonic chain unlocks strong entanglement between outer modes that would otherwise be absent.
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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.
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Unlocking vacuum entanglement
Measuring and communicating outcomes from central modes in a harmonic chain unlocks strong entanglement between outer modes that would otherwise be absent.