Cascaded dynamics of a periodically driven dissipative dipolar system

• URL: http://arxiv.org/abs/2211.15592v1
• Date: Mon, 28 Nov 2022 17:49:37 GMT
• Title: Cascaded dynamics of a periodically driven dissipative dipolar system
• Authors: Saptarshi Saha and Rangeet Bhattacharyya
• Abstract summary: periodic drives on dipolar systems lead to long-lived prethermal states. We use a fluctuation-regulated quantum master equation (FRQME) to describe these systems. We show that these prethermal states emerge in a timescale much shorter than the relaxation timescale.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recent experiments show that periodic drives on dipolar systems lead to long-lived prethermal states. These systems are weakly coupled to the environment and reach prethermal states in a timescale much shorter than the timescale for thermalization. Such nearly-closed systems have previously been analyzed using Floquet formalism, which shows the emergence of a prethermal plateau. We use a fluctuation-regulated quantum master equation (FRQME) to describe these systems. In addition to the system-environment coupling, FRQME successfully captures the dissipative effect from the various local interactions in the system. Our investigation reveals a cascaded journey of the system to a final steady state. The cascade involves a set of prethermal or arrested states characterized by a set of quasi-conserved quantities. We show that these prethermal states emerge in a timescale much shorter than the relaxation timescale. We also find and report the existence of a critical limit beyond which the prethermal plateau ceases to exist.

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