66 citations · 134 across the 3 of their papers we have counts for
3 papers
cond-mat.str-el2008★ 36 cited
Unitary perturbation theory approach to real-time evolution problems
A. Hackl, S. Kehrein
We discuss a new analytical approach to real-time evolution in quantum many-body systems. Our approach extends the framework of continuous unitary transformations such that it amou…
cond-mat.str-el2007★ 32 cited
Kondo volume collapse, Kondo breakdown, and Fermi surface transitions in heavy-fermion metals
Andreas Hackl, Matthias Vojta
The unconventional critical behavior near magnetic quantum phase transitions in various heavy-fermion metals, apparently inconsistent with the standard spin-density-wave scenario,…
cond-mat.str-el2007★ 66 cited
Real Time Evolution in Quantum Many-Body Systems With Unitary Perturbation Theory
A. Hackl, S. Kehrein
We develop a new analytical method for solving real time evolution problems of quantum many-body systems. Our approach is a direct generalization of the well-known canonical pertur…