Universal non-thermal fixed point for quasi-1D Bose gases
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915305707536384 |
|---|---|
| author | Liang, Qi Wu, RuGway Paranjape, Pradyumna Schittenkopf, Ben Li, Chen Schmiedmayer, Jörg Erne, Sebastian |
| author_facet | Liang, Qi Wu, RuGway Paranjape, Pradyumna Schittenkopf, Ben Li, Chen Schmiedmayer, Jörg Erne, Sebastian |
| contents | Spatio-temporal scaling dynamics connected to non-thermal fixed points has been suggested as a universal framework to describe the relaxation of isolated far-from-equilibrium systems. Experimental studies in weakly-interacting cold atom systems have found scaling dynamics connected to specific attractors. In our experiments, we study a quantum gas of strongly interacting $^6$Li$_2$ Feshbach molecules, brought far out of equilibrium by imprinting a white-noise phase profile. The observed relaxation follows the same universal dynamics as for the previously observed formation of the order parameter in a shock-cooled gas of weakly interacting $^{87}$Rb atoms. Our results point to a single universal fixed point with a large basin of attraction governing the relaxation of quasi-1D bosonic systems, independent of their specific initial conditions and microscopic details. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_20213 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Universal non-thermal fixed point for quasi-1D Bose gases Liang, Qi Wu, RuGway Paranjape, Pradyumna Schittenkopf, Ben Li, Chen Schmiedmayer, Jörg Erne, Sebastian Quantum Gases Statistical Mechanics Quantum Physics Spatio-temporal scaling dynamics connected to non-thermal fixed points has been suggested as a universal framework to describe the relaxation of isolated far-from-equilibrium systems. Experimental studies in weakly-interacting cold atom systems have found scaling dynamics connected to specific attractors. In our experiments, we study a quantum gas of strongly interacting $^6$Li$_2$ Feshbach molecules, brought far out of equilibrium by imprinting a white-noise phase profile. The observed relaxation follows the same universal dynamics as for the previously observed formation of the order parameter in a shock-cooled gas of weakly interacting $^{87}$Rb atoms. Our results point to a single universal fixed point with a large basin of attraction governing the relaxation of quasi-1D bosonic systems, independent of their specific initial conditions and microscopic details. |
| title | Universal non-thermal fixed point for quasi-1D Bose gases |
| topic | Quantum Gases Statistical Mechanics Quantum Physics |
| url | https://arxiv.org/abs/2505.20213 |