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math-ph2018★ 2 cited
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…
math-ph2018★ 11 cited
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…