Thermal lifetime of breathers
| Autor: | Archilla, Juan F. R., Bajārs, Jānis, Flach, Sergej |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | In this article, we explore the lifetime of localized excitations in nonlinear lattices, called breathers, when a thermalized lattice is perturbed with localized energy delivered to a single site. We develop a method to measure the time it takes for the system to approach equilibrium based on a single scalar quantity, the participation number, and deduce the value corresponding to thermal equilibrium. We observe the time to achieve thermalization as a function of the energy of the excited site. We explore a variety of different physical system models. The result is that the lifetime of breathers increases exponentially with the breather energy for all the systems. These results may provide a method to detect the existence of breathers in real systems. Comment: 24 pages, 14 figures |
| Databáze: | arXiv |
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