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cond-mat.mes-hall2012★ 24 cited
A diagrammatic description of the equations of motion, current, and noise within the second-order von Neumann approach
O. Karlström, C. Emary, P. Zedler +5
We investigate the second-order von Neumann approach from a diagrammatic point-of-view and demonstrate its equivalence with the resonant tunneling approximation. Investigation of h…
cond-mat.quant-gas2012
Thermal phase transitions for Dicke-type models in the ultra-strong coupling limit
M. Aparicio Alcalde, M. Bucher, C. Emary +1
We consider the Dicke model in the ultra-strong coupling limit to investigate thermal phase transitions and their precursors at finite particle numbers for bosonic and fermioni…