Rotating wave approximation: systematic expansion and application to coupled spin pairs

Details Rotating wave approximation: systematic expansion and application to coupled spin pairs Rotating wave approximation: systematic expansion and application to coupled spin pairs

1998-08-28

arxiv.org/abs/cond-mat/9808320v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

15 pages, Latex, submitted to European Physical Journal B

Scientific paper

We propose a new treatment of the dynamics of a periodically time-dependent Liouvillian by mapping it onto a time-independent problem and give a systematic expansion for its effective Liouvillian. In the case of a two-level system, the lowest order contribution is equivalent to the well-known rotating wave approximation. We extend the formalism to a pair of coupled two-level systems. For this pair, we find two Rabi frequencies and we can give parameter regimes where the leading order of the expansion is suppressed and higher orders become important. These results might help to investigate the interaction of tunneling systems in mixed crystals by providing a tool for the analysis of echo experiments.

Affiliated with

Also associated with

No associations

Rating

Rotating wave approximation: systematic expansion and application to coupled spin pairs 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 Rotating wave approximation: systematic expansion and application to coupled spin pairs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotating wave approximation: systematic expansion and application to coupled spin pairs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-349063