| Autor: |
Liu, Xiang-Pei, Yao, Xing-Can, Deng, Youjin, Wang, Yu-Xuan, Wang, Xiao-Qiong, Li, Xiao-Peng, Chen, Qijin, Chen, Yu-Ao, Pan, Jian-Wei |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Physical Review Research 3, 043115 (2021) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevResearch.3.043115 |
| Popis: |
We report an experimental study of quench dynamics across the superfluid transition temperature $T_c$ in a strongly interacting Fermi gas by ramping down the trapping potential. The nonzero quasi-condensate number $N_0$ at temperature significantly above $T_c$ in the unitary and the BEC regimes reveals the pseudogap physics. Below $T_c$, a rapid growth of $N_0$ is accompanied by spontaneous generation of tens of vortices. We observe a power law scaling of the vortex density versus the quasi-condensate formation time, consistent with the Kibble-Zurek theory. Our work provides an example of studying emerged many-body physics by quench dynamics and paves the way for studying the quantum turbulence in a strongly interacting Fermi gas. |
| Databáze: |
arXiv |
| Externí odkaz: |
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