11 citations · 33 across the 4 of their papers we have counts for
4 papers
From Short-Range to Contact Interactions in the 1d Bose Gas
Marcel Griesemer, Michael Hofacker, Ulrich Linden
For a system of bosons in one space dimension with two-body -interactions the Hamiltonian can be defined in terms of the usual closed semi-bounded quadratic form. We approxi…
High Density Limit of the Fermi Polaron with Infinite Mass
Ulrich Linden, David Mitrouskas
We analyze the ground state energy for identical fermions in a two-dimensional box of volume interacting with an external point scatterer. Since the point scatterer can b…
Spectral Theory of the Fermi Polaron
Marcel Griesemer, Ulrich Linden
The Fermi polaron refers to a system of free fermions interacting with an impurity particle by means of two-body contact forces. Motivated by the physicists' approach to this syste…
Stability of the two-dimensional Fermi polaron
Marcel Griesemer, Ulrich Linden
A system composed of an ideal gas of N fermions interacting with an impurity particle in two space dimensions is considered. The interaction between impurity and fermions is given…