Universal aspects of a strongly interacting impurity in a dilute Bose condensate

Abstract

We study the properties of an impurity immersed in a weakly interacting Bose gas, i.e., of a Bose polaron. In the perturbatively-tractable of limit weak impurity-boson interactions many of its properties are known to depend only on the scattering length. Here we demonstrate that for strong (unitary) impurity-boson interactions all static quasiproperties of a Bose polaron in a dilute Bose gas, 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.

6 pages, 3 figures, plus Supplemental Material

References in corpus (7)

• Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
• Attractive and repulsive Fermi polarons in two dimensions
• A trapped single ion inside a Bose-Einstein condensate
• Repulsive Fermi polarons in a resonant mixture of ultracold ${}^6$Li atoms
• Ultra-cold Polarized Fermi Gases
• Finite-temperature behavior of the Bose polaron
• Self-localized state and solitons in a Bose-Einstein-condensate-impurity mixture at finite temperature

Cited by in corpus (26)

• Quantum behavior of a heavy impurity strongly coupled to a Bose gas
• Many-body bound states and induced interactions of charged impurities in a bosonic bath
• Life and death of the Bose polaron
• Quench Dynamics of the Ideal Bose Polaron at Zero and Nonzero Temperatures
• Renormalization group study of Bose polarons
• Impurities in a one-dimensional Bose gas: the flow equation approach
• Universal van der Waals Force Between Heavy Polarons in Superfluids
• Finite-range effects in the unitary Fermi polaron
• Phase diagram for strong-coupling Bose polarons
• Observation of $1/k^4$-tails after expansion of Bose-Einstein Condensates with impurities
• Medium-induced Interaction Between Impurities in a Bose-Einstein Condensate
• Strongly interacting impurities in a dilute Bose condensate
• Exact results for heavy unitary Bose polarons
• Universal properties of dipolar Bose polarons in two dimensions
• Polaritons for testing the universality of an impurity in a Bose-Einstein condensate
• Universal quantum dynamics of Bose polarons
• Disorder in order: Localization without randomness in a cold atom system
• Impurity with a resonance in the vicinity of the Fermi energy
• 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
• Functional renormalisation group approach to the finite-temperature Bose polaron
• Self-stabilized Bose polarons
• Linear rotor in an ideal Bose gas near the threshold for binding
• Quantum rotor in a two-dimensional mesoscopic Bose gas
• Polaronic dressing of bound states
• Validity of the Fröhlich model for a mobile impurity in a Bose-Einstein condensate