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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2502.19228 |
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| _version_ | 1866910846313037824 |
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| author | Reimann, Peter Eidecker-Dunkel, Christian |
| author_facet | Reimann, Peter Eidecker-Dunkel, Christian |
| contents | We consider the common spin-1/2 XX-model in one dimension with open boundary conditions and a large but finite number of spins. The system is in thermal equilibrium at times t<0, and is subject to a weak local perturbation (quantum quench) at t=0. Focusing mainly on single-spin perturbations and observables, we show that the system re-thermalizes for sufficiently large times t>0 without invoking any unproven assumptions besides the basic laws of quantum mechanics. Moreover, the time-dependent relaxation behavior is obtained in quantitative detail and is found to exhibit a wealth of interesting features. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_19228 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Thermalization in a simple spin-chain model Reimann, Peter Eidecker-Dunkel, Christian Statistical Mechanics We consider the common spin-1/2 XX-model in one dimension with open boundary conditions and a large but finite number of spins. The system is in thermal equilibrium at times t<0, and is subject to a weak local perturbation (quantum quench) at t=0. Focusing mainly on single-spin perturbations and observables, we show that the system re-thermalizes for sufficiently large times t>0 without invoking any unproven assumptions besides the basic laws of quantum mechanics. Moreover, the time-dependent relaxation behavior is obtained in quantitative detail and is found to exhibit a wealth of interesting features. |
| title | Thermalization in a simple spin-chain model |
| topic | Statistical Mechanics |
| url | https://arxiv.org/abs/2502.19228 |