, critical-to-critical quench displays quantum criticality even in the stationary state. Remarkably, in the presence of long-range pairing interactions, where fermionic correlators decay algebraically even at noncritical points, the signature of quantum criticality persists in the stationary state. Furthermore, the effective central charge, calculated from both mutual information and logarithmic negativity of the stationary state following a critical-to-critical quench, agrees with the central charge of the corresponding ground states for both

\ensuremath{\alpha}=0

and

\ensuremath{\alpha}=2

. Therefore, information of the universality class can be inferred from the stationary state.

DOI: 10.1103/physrevb.111.104308

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\ensuremath{\alpha}

. Using quantum information-theoretic measures, such as mutual information and logarithmic negativity, we show that irrespective of the values of

\ensuremath{\alpha}

\ensuremath{\alpha}=0

and

\ensuremath{\alpha}=2

. Therefore, information of the universality class can be inferred from the stationary state.

α

. Using quantum information-theoretic measures, such as mutual information and logarithmic negativity, we show that, irrespective of the values of

α

, critical-to-critical quench displays quantum criticality even in the stationary state. Remarkably, in the presence of long-range pairing interactions, where fermionic correlators decay algebraically even at non-critical points, signature of quantum criticality persists in the stationary state. Furthermore, the effective central charge, calculated from both mutual information and logarithmic negativity of stationary state following a critical-to-critical quench, agrees with the central charge of the corresponding ground states for both

α= 0

and

α= 2

. Therefore, information of the universality class can be inferred from the stationary state.