1.3k citations · 8.5k across the 97 of their papers we have counts for
7 papers · 1 filter
Model-independent determination of the shear viscosity of a trapped unitary Fermi gas: Application to high temperature data
Marcus Bluhm, Thomas Schaefer
Determinations of the shear viscosity of trapped ultracold gases suffer from systematic, uncontrolled uncertainties related to the treatment of the dilute part of the gas cloud. In…
Toward Picard-Lefschetz Theory of Path Integrals, Complex Saddles and Resurgence
Alireza Behtash, Gerald V. Dunne, Thomas Schaefer +2
We show that the semi-classical analysis of generic Euclidean path integrals necessarily requires complexification of the action and measure, and consideration of complex saddle so…
Complexified path integrals, exact saddles and supersymmetry
Alireza Behtash, Gerald V. Dunne, Thomas Schaefer +2
In the context of two illustrative examples from supersymmetric quantum mechanics we show that the semi-classical analysis of the path integral requires complexification of the con…
Properties of hot and dense matter from relativistic heavy ion collisions
Peter Braun-Munzinger, Volker Koch, Thomas Schaefer +1
We review the progress achieved in extracting the properties of hot and dense matter from relativistic heavy ion collisions at the relativistic heavy ion collider (RHIC) at Brookha…
Dynamical vertex approximation for the two-dimensional Hubbard model
T. Schaefer, A. Toschi, K. Held
Recently, diagrammatic extensions of dynamical mean field theory (DMFT) have been proposed for including short- and long-range correlations beyond DMFT on an equal footing. We empl…
Dissipative fluid dynamics for the dilute Fermi gas at unitarity: Anisotropic fluid dynamics
Marcus Bluhm, Thomas Schaefer
We consider the time evolution of a dilute atomic Fermi gas after release from a trapping potential. A common difficulty with using fluid dynamics to study the expansion of the gas…
Hidden topological angles and Lefschetz thimbles
Alireza Behtash, Tin Sulejmanpasic, Thomas Schaefer +1
We demonstrate the existence of hidden topological angles (HTAs) in a large class of quantum field theories and quantum mechanical systems. HTAs are distinct from theta-parameters…