36 citations · 186 across the 25 of their papers we have counts for
26 papers
Occupation numbers in a quantum canonical ensemble: a projection operator approach
Wim Magnus, Fons Brosens
Recently, we have used a projection operator to fix the number of particles in a second quantization approach in order to deal with the canonical ensemble. Having been applied earl…
Quantum canonical ensemble: a projection operator approach
Wim Magnus, Fons Brosens
Fixing the number of particles , the quantum canonical ensemble imposes a constraint on the occupation numbers of single-particle states. The constraint particularly hampers the…
Optical properties of inhomogeneous metallic hydrogen plasmas
N. Van den Broeck, F. Brosens, J. Tempere +1
We investigate the optical properties of hydrogen as it undergoes a transition from the insulating molecular to the metallic atomic phase, when heated by a pulsed laser at megabar…
Self-energy correction to dynamic polaron response
Dries Sels, Fons Brosens
We present the first order self-energy correction to the linear response coefficients of polaronic systems within the truncated phase space approach developed by the present author…
Variational Truncated Wigner Approximation
Dries Sels, Fons Brosens
In this paper we reconsider the notion of an optimal effective Hamiltonian for the semiclassical propagation of the Wigner distribution in phase space. An explicit expression for t…
Phase-space approach to polaron response: Kadanoff and FHIP re-examined
Dries Sels, Fons Brosens
A method is presented to obtain the linear response coefficients of a system coupled to a bath. The method is based on a systematic truncation of the Liouville equation for the red…