In the 1D transverse-field XY model, the temperature-scaled maximal response of absorbed energy, entanglement, and mutual information after a quench falls much faster when the initial field is in the quantum critical region, and this behavior is used to propose a dynamical boundary for that region.
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Response of macroscopic and microscopic dynamical quantifiers to the quantum critical region
In the 1D transverse-field XY model, the temperature-scaled maximal response of absorbed energy, entanglement, and mutual information after a quench falls much faster when the initial field is in the quantum critical region, and this behavior is used to propose a dynamical boundary for that region.