Chemistry of a light impurity in a Bose-Einstein condensate
arXiv:2108.03174 · doi:10.1103/PhysRevLett.128.183401
Abstract
In ultracold atomic gases, a unique interplay arises between phenomena known from condensed matter physics, few-body physics and chemistry. Similar to an electron in a solid, an impurity in an ultracold gas can get dressed by excitations from the medium, forming a quasiparticle called the polaron. We study how dressing of an impurity leads to a modification of its chemical reactivity. Using a Gaussian state variational method in the frame of the impurity, we demonstrate that three-body correlations lead to an instability of the polaron. This instability is connected to an Efimov resonance, but shifted to smaller interactions by many-body effects, showing that polaron formation stimulates Efimov physics and the associated chemistry.
6 pages, 4 figures
References in corpus (10)
- Many-Body Physics with Ultracold Gases
- Theory of ultracold Fermi gases
- Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
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- Evidence for Universal Four-Body States Tied to an Efimov Trimer
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- From Efimov Physics to the Bose Polaron using Gaussian States
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- Enhancing the Efimov correlation in Bose polarons with large mass imbalance
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Cited by in corpus (9)
- From Efimov Physics to the Bose Polaron using Gaussian States
- Phase diagram for strong-coupling Bose polarons
- Fast quantum state preparation and bath dynamics using non-Gaussian variational ansatz and quantum optimal control
- Open quantum dynamics with variational non-Gaussian states and the truncated Wigner approximation
- Polaritons for testing the universality of an impurity in a Bose-Einstein condensate
- Temperature-induced miscibility of impurities in trapped Bose gases
- A unified theory of strong coupling Bose polarons: From repulsive polarons to non-Gaussian many-body bound states
- Polaronic dressing of bound states
- Dissipationless tune-out trapping for a lanthanide-alkali quantum gas mixture