Abstract
We study the impact of three-body physics in quenched unitary Bose gases, focusing on the role of the Efimov effect. Using a local density model, we solve the three-body problem and determine three-body decay rates at unitary, finding density-dependent, log-periodic Efimov oscillations, violating the expected continuous scale-invariance in the system. We find that the breakdown of continuous scale-invariance, due to Efimov physics, manifests also in the earliest stages of evolution after the interaction quench to unitarity, where we find the growth of a substantial population of Efimov states for densities in which the interparticle distance is comparable to the size of an Efimov state. This agrees with the early-time dynamical growth of three-body correlations at unitarity [Colussi {\em et al}., Phys. Rev. Lett. 120, 100401 (2018)]. By varying the sweep rate away from unitarity, we also find a departure from the usual Landau-Zener analysis for state transfer when the system is allowed to evolve at unitarity and develop correlations.
| Original language | English |
|---|---|
| Number of pages | 12 |
| Journal | arXiv.org, e-Print Archive, Physics |
| Issue number | 1804.05912v3 |
| Publication status | Published - 16 Apr 2018 |
Bibliographical note
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Cite this
D'Incao, J. P., Wang, J., & Colussi, V. E. (2018). Efimov physics in quenched unitary bose gases. arXiv.org, e-Print Archive, Physics, (1804.05912v3).