For fast quenches starting at the critical point, the variance of defect counts is exactly linear in quench depth while the third cumulant shows a quadratic suppression, with trapped-ion data shown as validation.
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Quantum Quenches from the Critical Point: Theory and Experimental Validation in a Trapped-Ion Quantum Simulator
For fast quenches starting at the critical point, the variance of defect counts is exactly linear in quench depth while the third cumulant shows a quadratic suppression, with trapped-ion data shown as validation.