161 citations · 415 across the 23 of their papers we have counts for
24 papers
From Short-Range to Contact Interactions in Two-dimensional Many-Body Quantum Systems
Marcel Griesemer, Michael Hofacker
Quantum systems composed of distinct particles in with two-body contact interactions of TMS type are shown to arise as limits - in the norm resolvent sense - of Schrödin…
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…
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…
On the domain of the Nelson Hamiltonian
Marcel Griesemer, Andreas Wünsch
The Nelson Hamiltonian is unitarily equivalent to a Hamiltonian defined through a closed, semibounded quadratic form, the unitary transformation being explicitly known and due to G…
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…
On the dynamics of polarons in the strong-coupling limit
Marcel Griesemer
The polaron model of H. Fröhlich describes an electron coupled to the quantized longitudinal optical modes of a polar crystal. In the strong-coupling limit one expects that the pho…