132 citations · 385 across the 14 of their papers we have counts for
7 papers · 1 filter
Generalized Gross-Pitaevskii Equation for 2D Bosons with Attractive Interactions
Michał Suchorowski, Fabian Brauneis, Hans-Werner Hammer +2
We introduce a generalized Gross-Pitaevskii equation that provides a nonlinear framework for studying two-dimensional (2D) attractive Bose systems. Its defining feature is the loga…
Effective theory for strongly attractive one-dimensional fermions
Timothy G. Backert, Fabian Brauneis, Matija Čufar +3
We study a one-dimensional system of two-component fermions in the limit of strong attractive particle-particle interactions. First, we analyze scattering in the corresponding few-…
Two-dimensional bosonic droplets in a harmonic trap
Fabian Brauneis, Artem G. Volosniev, Hans-Werner Hammer
We investigate a system of bosons in a two-dimensional harmonic trap. In the limit of strong attractive interactions, the bosons make a droplet insensitive to external confinement.…
Analytical approach to the Bose polaron problem in one dimension
A. G. Volosniev, H. -W. Hammer
We discuss the ground state properties of a one-dimensional bosonic system doped with an impurity (the so-called Bose polaron problem). We introduce a formalism that allows us to c…
Ab initio lattice results for Fermi polarons in two dimensions
Shahin Bour, Dean Lee, H. -W. Hammer +1
We investigate the attractive Fermi polaron problem in two dimensions using non-perturbative Monte Carlo simulations. We introduce a new Monte Carlo algorithm called the impurity l…
Convergence Properties of the Effective Theory for Trapped Bosons
S. Tölle, H. -W. Hammer, B. Ch. Metsch
We investigate few-boson systems with resonant interactions in a narrow harmonic trap within an effective theory framework. The size of the model space is identified with the effec…
Universal few-body physics in a harmonic trap
S. Tölle, H. -W. Hammer, B. C. Metsch
Few-body systems with resonant short-range interactions display universal properties that do not depend on the details of their structure or their interactions at short distances.…