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Fermions meet two bosons -- the heteronuclear Efimov effect revisited
Binh Tran, Michael Rautenberg, Manuel Gerken +7
In this article, we revisit the heteronuclear Efimov effect in a Bose-Fermi mixture with large mass difference in the Born-Oppenheimer picture. As a specific example, we consider t…
Scattering of two heavy Fermi polarons: resonances and quasibound states
Tilman Enss, Binh Tran, Michael Rautenberg +6
Impurities in a Fermi sea, or Fermi polarons, experience a Casimir interaction induced by quantum fluctuations of the medium. When there is short-range attraction between impuritie…
Functional Integral and Stochastic Representations for Ensembles of Identical Bosons on a Lattice
Manfred Salmhofer
Regularized coherent-state functional integrals are derived for ensembles of identical bosons on a lattice, the regularization being a discretization of Euclidian time. Convergence…
Theory of a resonantly interacting impurity in a Bose-Einstein condensate
Moritz Drescher, Manfred Salmhofer, Tilman Enss
We investigate a Bose-Einstein condensate in strong interaction with a single impurity particle. While this situation has received considerable interest in recent years, the regime…