Modeling heat transport through completely positive maps

Details Modeling heat transport through completely positive maps Modeling heat transport through completely positive maps

2007-03-07

arxiv.org/abs/quant-ph/0703048v3

Phys. Rev. E 76, 031115 (2007)

Physics

Quantum Physics

7 pages, 2 figures

Scientific paper

10.1103/PhysRevE.76.031115

We investigate heat transport in a spin-1/2 Heisenberg chain, coupled locally to independent thermal baths of different temperature. The analysis is carried out within the framework of the theory of open systems by means of appropriate quantum master equations. The standard microscopic derivation of the weak-coupling Lindblad equation in the secular approximation is considered, and shown to be inadequate for the description of stationary nonequilibrium properties like a non-vanishing energy current. Furthermore, we derive an alternative master equation that is capable to describe a stationary energy current and, at the same time, leads to a completely positive dynamical map. This paves the way for efficient numerical investigations of heat transport in larger systems based on Monte Carlo wave function techniques.

Affiliated with

Also associated with

No associations

Rating

Modeling heat transport through completely positive maps does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Modeling heat transport through completely positive maps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling heat transport through completely positive maps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-255316