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Condensed Matter > Statistical Mechanics
Title: Localization and integrability breaking in weakly interacting Floquet circuits
(Submitted on 3 Nov 2023 (v1), last revised 1 Apr 2024 (this version, v2))
Abstract: We present a family of Floquet circuits that can interpolate between non-interacting qubits, free propagation, generic interacting, and dual-unitary dynamics. We identify the operator entanglement entropy of the two-qubit gate as a good quantitative measure of the interaction strength. We test the persistence of localization in the vicinity of the non-interacting point by probing spectral statistics, decay of autocorrelators, and measuring entanglement growth. The finite-size analysis suggests that the many-body localized regime does not persist in the thermodynamic limit. Instead, our results are compatible with an integrability-breaking phenomenon.
Submission history
From: Dominik Hahn [view email][v1] Fri, 3 Nov 2023 19:00:27 GMT (2866kb,D)
[v2] Mon, 1 Apr 2024 14:11:52 GMT (4845kb,D)
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