Linear and nonlinear susceptibilities of a decoherent two-level system

Details Linear and nonlinear susceptibilities of a decoherent two-level system Linear and nonlinear susceptibilities of a decoherent two-level system

2000-02-19

arxiv.org/abs/cond-mat/0002312v1

Phys. Rev. B61, 4636 (2000)

Physics

Condensed Matter

10 pages, 9 figures

Scientific paper

10.1103/PhysRevB.61.4636

The linear and nonlinear dynamical susceptibilities of a two level system are calculated as it undergoes a transition to a decoherent state. Analogously to the Glover-Tinkham-Ferrell sum rule of superconductivity, spectral weight in the linear susceptibility is continuously transferred from a finite frequency resonance to nearly zero frequency, corresponding to a broken symmetry in the thermodynamic limit. For this reason, the behavior of the present model (the Mermin model) differs significantly from the spin-boson model. The third order nonlinear susceptibility, corresponding to two-photon absorption, has an unexpected non-monotonic behavior as a function of the environmental coupling, reaching a maximum within the decoherent phase of the model. Both linear and nonlinear susceptibilities may be expressed in a universal form.

Affiliated with

Also associated with

No associations

Rating

Linear and nonlinear susceptibilities of a decoherent two-level system 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 Linear and nonlinear susceptibilities of a decoherent two-level system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear and nonlinear susceptibilities of a decoherent two-level system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-713565