435 citations · 1.5k across the 17 of their papers we have counts for
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cond-mat.stat-mech2014★ 35 cited
Two-bath spin-boson model: Phase diagram and critical properties
Benedikt Bruognolo, Andreas Weichselbaum, Cheng Guo +3
The spin-boson model, describing a two-level system coupled to a bath of harmonic oscillators, is a generic model for quantum dissipation, with manifold applications. It has also b…
cond-mat.stat-mech2011★ 130 cited
Critical and strong-coupling phases in one- and two-bath spin-boson models
Cheng Guo, Andreas Weichselbaum, Jan von Delft +1
For phase transitions in dissipative quantum impurity models, the existence of a quantum-to-classical correspondence has been discussed extensively. We introduce a variational matr…