Localized dynamics following a quantum quench in a non-integrable system: an example on the sawtooth ladder
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 02, 2020
- Source ID
- 10.1088/1361-6455/abc499
Entities
People
- Rishabh Khare
- Sayan Choudhury
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- Purdue Research Foundation