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Title: Do dynamical transition times coincide with zeros of the order parameter
Plain: In some models the kinks happen exactly when the measured order of the system passes through zero, in others they do not. When the two coincide is unknown.
Precise: For quenches from a symmetry-broken state, determine the conditions under which the nonanalytic times $t_c$ of the Loschmidt rate $l(t)$ coincide with zeros or sign changes of the order-parameter expectation value $m(t)$. Answer: a criterion valid for interacting models in $d = 1 \text{ and } 2$.
Settled by: A criterion proved, or verified numerically across interacting models in $d = 1\text{ and }2$, including cases with and without coincidence.
Kind: well-posed
Answer type: classification
References: (empty)
Literature status: open
Status note: (empty)
Posed since: (empty)