Impurity self-energy in the strongly-correlated Bose systems

Abstract

We proposed the non-perturbative scheme for calculation of the impurity spectrum in the Bose system at zero temperature. The method is based on the path-integral formulation and describes an impurity as a zero-density ideal Fermi gas interacting with Bose system for which the action is written in terms of density fluctuations. On the example of the ${}^3$He atom immersed in the liquid helium-4 a good consistency with experimental data and results of Monte Carlo simulations is shown.

5 pages, 4 figures

References in corpus (8)

• Variational study of polarons in Bose-Einstein condensates
• Self-trapping of impurities in Bose-Einstein condensates: Strong attractive and repulsive coupling
• Diagrammatic Monte Carlo study of the acoustic and the BEC polaron
• Visualizing Efimov Correlations in the Bose Polaron
• The Bose polaron problem: effect of mass imbalance on binding energy
• Generalized Hartree-Fock-Bogoliubov Description of the Frohlich Polaron
• Diagrammatic calculation of energy spectrum of quantum impurity in degenerate Bose-Einstein condensate
• Behavior of the impurity atom in a weakly-interacting Bose gas

Cited by in corpus (6)

• Mean-field construction for spectrum of one-dimensional Bose polaron
• Mean-field study of repulsive 2D and 3D Bose polarons
• Polaron in dilute 2D Bose gas at low temperatures
• Polaron in the dilute critical Bose condensate
• Impurity in a three-dimensional unitary Bose gas
• Mean-field properties of impurity in Bose gas with three-body forces