Thermalization of two- and three-dimensional classical lattices
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2020
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| _version_ | 1866914813948461056 |
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| author | Wang, Zhen Fu, Weicheng Zhang, Yong Zhao, Hong |
| author_facet | Wang, Zhen Fu, Weicheng Zhang, Yong Zhao, Hong |
| contents | Whether and how a system reaches thermalization is a fundamental issue of statistical physics. While for one-dimensional lattices this issue has been intensively studied in terms of energy equipartition for more than half a century, few work has been performed in the case of two- and three-dimensional lattices, and thus the thermalization dynamics remains unclear for more realistic lattices. In this Letter we investigate analytically and numerically the time-scaling of energy relaxation in these lattices. We show that the equipartition of energy is generally reached following a universal scheme for large enough lattices, regardless of its dimensionality, its specific lattice structure, and whether the system is translation invariant or not. Our results have practical significance in exploring the effect of high-order nonlinearities, i.e., the combining effect of multi-phonon process, in solid materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2005_03478 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Thermalization of two- and three-dimensional classical lattices Wang, Zhen Fu, Weicheng Zhang, Yong Zhao, Hong Statistical Mechanics Disordered Systems and Neural Networks Chaotic Dynamics Whether and how a system reaches thermalization is a fundamental issue of statistical physics. While for one-dimensional lattices this issue has been intensively studied in terms of energy equipartition for more than half a century, few work has been performed in the case of two- and three-dimensional lattices, and thus the thermalization dynamics remains unclear for more realistic lattices. In this Letter we investigate analytically and numerically the time-scaling of energy relaxation in these lattices. We show that the equipartition of energy is generally reached following a universal scheme for large enough lattices, regardless of its dimensionality, its specific lattice structure, and whether the system is translation invariant or not. Our results have practical significance in exploring the effect of high-order nonlinearities, i.e., the combining effect of multi-phonon process, in solid materials. |
| title | Thermalization of two- and three-dimensional classical lattices |
| topic | Statistical Mechanics Disordered Systems and Neural Networks Chaotic Dynamics |
| url | https://arxiv.org/abs/2005.03478 |