Journal
PHYSICAL REVIEW LETTERS
Volume 126, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.123403
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Funding
- Spanish MINECO [FIS2017-84114-C2-1-P]
- EU FEDER Quantumcat
- Simons Collaboration on Ultra-Quantum Matter from the Simons Foundation [651440]
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The study shows that in a strongly interacting Bose gas, the quasiparticle properties of a heavy Bose polaron depend on the impurity-boson potential through a single parameter that characterizes its range.
We study the properties of an impurity immersed in a weakly interacting Bose gas, i.e., of a Bose polaron. In the perturbatively tractable limit of weak impurity-boson interactions many of its properties are known to depend only on the scattering length. Here we demonstrate that for strong (unitary) impurityboson interactions all quasiparticle properties of a heavy Bose polaron, such as its energy, its residue, its Tan's contact, and the number of bosons trapped nearby the impurity, depend on the impurity-boson potential via a single parameter characterizing its range.
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