335 citations · 1.3k across the 41 of their papers we have counts for
41 papers
Steady state coherence in a qubit is incompatible with a quantum map
Hans C. Fogedby
We consider the recent proposal of steady state coherences in a single qubit in the case of a composite system-bath interaction. Based on a field theoretical approach we reanalyse…
On the Redfield and Lindblad master equations
Hans C. Fogedby
In a previous work we developed a field theoretical approach to open quantum systems using condensed matter methods. In the Born approximation we derived the Redfield equation on t…
Heat currents in qubit systems
Hans C. Fogedby
There is a current interest in quantum thermodynamics in the context of open quantum systems. An important issue is the consistency of quantum thermodynamics, in particular the sec…
Field-theoretical approach to open quantum systems and the Lindblad equation
Hans C. Fogedby
We develop a systematic field-theoretical approach to open quantum systems based on condensed-matter many-body methods. The time evolution of the reduced density matrix for the ope…
Aspects of the disordered harmonic chain
Hans C. Fogedby
We discuss the driven harmonic chain with fixed boundary conditions subject to weak coupling strength disorder. We discuss the evaluation of the Liapunov exponent in some detail ex…
Heat fluctuations in equilibrium
Hans C. Fogedby
The characteristic function for heat fluctuations in a non equilibrium system is characterised by a large deviation function whose symmetry gives rise to a fluctuation theorem. In…