Symmetry-enforced diffusive Langevin dynamics plus decoherence of high-momentum modes produces a universal momentum distribution that yields the parameter-free prediction C=3 for the coherence spreading constant ℓ²(t) = C ħ t / m.
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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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Universal Speed Limit in a Far-from-Equilibrium Bose Gas: Symmetry and Dynamical Decoherence
Symmetry-enforced diffusive Langevin dynamics plus decoherence of high-momentum modes produces a universal momentum distribution that yields the parameter-free prediction C=3 for the coherence spreading constant ℓ²(t) = C ħ t / m.
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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.