74 citations · 513 across the 21 of their papers we have counts for
21 papers
Anomalous low-energy -related behavior in triaxial nuclei
Yu Zhang, Ying-Wen He, D. Karlsson +3
The anomalous low-energy -related behavior of a triaxially-deformed nucleus bas been identified and analyzed based on the SU(3) algebraic theory within the framework of the int…
Cutting rules and positivity in finite temperature many-body theory
Markku J. Hyrkäs, Daniel Karlsson, Robert van Leeuwen
For a given diagrammatic approximation in many-body perturbation theory it is not guaranteed that positive observables, such as the density or the spectral function, retain their p…
A many-body approach to transport in quantum systems: From the transient regime to the stationary state
M. Ridley, N. W. Talarico, D. Karlsson +2
We review one of the most versatile theoretical approaches to the study of time-dependent correlated quantum transport in nano-systems: the non-equilibrium Green's function (NEGF)…
Time-linear scaling NEGF methods for real-time simulations of interacting electrons and bosons. II. Dynamics of polarons and doublons
Yaroslav Pavlyukh, Enrico Perfetto, Daniel Karlsson +2
Nonequilibrium dynamics of the open chain Holstein-Hubbard model is studied using the linear time-scaling GKBA+ODE scheme developed in the preceeding paper. We focus on the set of…
Time-linear scaling NEGF methods for real-time simulations of interacting electrons and bosons. I. Formalism
Yaroslav Pavlyukh, Enrico Perfetto, Daniel Karlsson +2
Simulations of interacting electrons and bosons out of equilibrium, starting from first principles and aiming at realistic multiscale scenarios, is a grand theoretical challenge. H…
Fast Green's function method for ultrafast electron-boson dynamics
Daniel Karlsson, Robert van Leeuwen, Yaroslav Pavlyukh +2
The interaction of electrons with quantized phonons and photons underlies the ultrafast dynamics of systems ranging from molecules to solids, and it gives rise to a plethora of phy…