30 citations · 88 across the 9 of their papers we have counts for
3 papers · 1 filter
Extracting spectral properties from Keldysh Green functions
Andreas Dirks, Martin Eckstein, Thomas Pruschke +1
We investigate the possibility to assist the numerically ill-posed calculation of spectral properties of interacting quantum systems in thermal equilibrium by extending the imagina…
Imaginary-time quantum many-body theory out of equilibrium II: Analytic continuation of dynamic observables and transport properties
Andreas Dirks, Jong E. Han, Mark Jarrell +1
Within the imaginary-time theory for nonequilibrium in quantum dot systems the calculation of dynamical quantities like Green's functions is possible via a suitable quantum Monte-C…
Imaginary-time quantum many-body theory out of equilibrium I: Formal equivalence to Keldysh real-time theory and calculation of static properties
Jong E. Han, Andreas Dirks, Thomas Pruschke
We discuss the formal relationship between the real-time Keldysh and imaginary-time theory for nonequilibrium in quantum dot systems. The latter can be reformulated using the recen…