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arXiv · 2010.15548

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

Rishabh Khare·Sayan Choudhury
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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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Rishabh Khare, Sayan Choudhury. 2020-10-29. Localized dynamics following a quantum quench in a non-integrable system: An example on the sawtooth ladder. https://doi.org/10.1088/1361-6455/abc499

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