Observation of universal dynamics in an isolated one-dimensional Bose gas far from equilibrium
| Autor: | Erne, S., Buecker, R., Gasenzer, T., Berges, J., Schmiedmayer, J. |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Nature 563, 225 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41586-018-0667-0 |
| Popis: | We provide experimental evidence of universal dynamics far from equilibrium during the relaxation of an isolated one-dimensional Bose gas. Following a rapid cooling quench, the system exhibits universal scaling in time and space, associated with the approach of a non-thermal fixed point. The time evolution within the scaling period is described by a single universal function and scaling exponent, independent of the specifics of the initial state. Our results provide a quantum simulation in a regime, where to date no theoretical predictions are available. This constitutes a crucial step in the verification of universality far from equilibrium. If successful, this may lead to a comprehensive classification of systems based on their universal properties far from equilibrium, relevant for a large variety of systems at different scales. Comment: 12 pages, 9 figures |
| Databáze: | arXiv |
| Externí odkaz: |
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