Bath-Induced Zeno Localization in Driven Many-Body Quantum Systems - INSPIRE

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Bath-Induced Zeno Localization in Driven Many-Body Quantum Systems

Sep 24, 2020

6 pages

Published in:

Phys.Rev.Lett. 126 (2021) 12, 120603

Published: Mar 24, 2021

e-Print:

2009.11784 [cond-mat.stat-mech]

DOI:

10.1103/PhysRevLett.126.120603

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Abstract: (APS)

We study a quantum interacting spin system subject to an external drive and coupled to a thermal bath of vibrational modes, uncorrelated for different spins, serving as a model for dynamic nuclear polarization protocols. We show that even when the many-body eigenstates of the system are ergodic, a sufficiently strong coupling to the bath may effectively localize the spins due to many-body quantum Zeno effect. Our results provide an explanation of the breakdown of the thermal mixing regime experimentally observed above 4–5 K in these protocols.

Note:

Revised version. 4 + 22 pages

General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

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Figures(19)

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