Localized dynamics following a quantum quench in a non-integrable system: An example on the sawtooth ladder

• URL: http://arxiv.org/abs/2010.15548v2
• Date: Sat, 2 Jan 2021 18:17:47 GMT
• Title: Localized dynamics following a quantum quench in a non-integrable system: An example on the sawtooth ladder
• Authors: Rishabh Khare and Sayan Choudhury
• Abstract summary: We study the quench dynamics of interacting hardcore bosons on a sawtooth ladder. We identify a set of initial states for which this system exhibits characteristic signatures of localization. We argue that the localized dynamics originates from an interaction induced quantum interference.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Motivated by the recent discovery of ergodicity breaking in geometrically frustrated systems, we study the quench dynamics of interacting hardcore bosons on a sawtooth ladder. We identify a set of initial states for which this system exhibits characteristic signatures of localization like initial state memory retention and slow growth of entanglement entropy for a wide parameter regime. Remarkably, this localization persists even when the many-body spectrum is thermalizing. We argue that the localized dynamics originates from an interaction induced quantum interference. Our results show that the sawtooth ladder can be a fertile platform for realizing non-equilibrium quantum states of matter.

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