Bath-induced Zeno localization in driven many-body quantum systems
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2020
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| _version_ | 1866911107708354560 |
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| author | Maimbourg, Thibaud Basko, Denis M. Holzmann, Markus Rosso, Alberto |
| author_facet | Maimbourg, Thibaud Basko, Denis M. Holzmann, Markus Rosso, Alberto |
| contents | We study a quantum interacting spin system subject to an external drive and coupled to a thermal bath of spatially localized vibrational modes, serving as a model of Dynamic Nuclear Polarization. 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, as manifested by the hole-burning shape of the electron paramagnetic resonance spectrum. Our results provide an explanation of the breakdown of the thermal mixing regime experimentally observed above 4 - 5 Kelvin. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2009_11784 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Bath-induced Zeno localization in driven many-body quantum systems Maimbourg, Thibaud Basko, Denis M. Holzmann, Markus Rosso, Alberto Statistical Mechanics Disordered Systems and Neural Networks Quantum Physics We study a quantum interacting spin system subject to an external drive and coupled to a thermal bath of spatially localized vibrational modes, serving as a model of Dynamic Nuclear Polarization. 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, as manifested by the hole-burning shape of the electron paramagnetic resonance spectrum. Our results provide an explanation of the breakdown of the thermal mixing regime experimentally observed above 4 - 5 Kelvin. |
| title | Bath-induced Zeno localization in driven many-body quantum systems |
| topic | Statistical Mechanics Disordered Systems and Neural Networks Quantum Physics |
| url | https://arxiv.org/abs/2009.11784 |