737 citations · 2.7k across the 57 of their papers we have counts for
56 papers
Anderson orthogonality scaling in the Rabi-driven heavy Fermi polaron
Michael Rautenberg, Tobias Krom, Eugen Dizer +6
The Anderson orthogonality catastrophe (AOC) is a paradigmatic many-body phenomenon in which a local perturbation induces a macroscopic response of a Fermi sea. We probe signatures…
Reflection Positivity in Free Fermionic Theories
Carl Handrack, Manfred Salmhofer
Reflection positivity is one of the Osterwalder--Schrader axioms for Euclidean quantum field theory, ensuring that the reconstructed relativistic Hilbert space carries a positive-d…
Enhancing superconductivity using thermal bosons
Ekaterina Vlasiuk, Manfred Salmhofer, Eugene Demler +1
We investigate how the strong coupling of a superconductor to thermal bosons can enhance its superconducting critical temperature. To tackle this problem, we use a renormalization…
Fate of an impurity strongly interacting with a thermal Bose gas
Jiří Etrych, Sebastian J. Morris, Simon M. Fischer +7
We spectroscopically study mobile impurities immersed in a homogeneous bosonic bath (a box-trapped Bose gas), varying the bath temperature and the strength of impurity-bath interac…
A rigorous Keldysh functional integral for fermions
Philipp Benjamin Aretz, Manfred Salmhofer
We provide a mathematically rigorous Keldysh functional integral for fermionic quantum field theories. We show convergence of a discrete-time Grassmann Gaussian integral representa…
Bosonic Functional Determinant Approach and its Application to Polaron Spectra
Moritz Drescher, Manfred Salmhofer, Tilman Enss
The functional determinant approach (FDA) is a simple method to compute exactly certain observables for ideal quantum systems and has been successfully applied to the Fermi polaron…