Anomalous strong exchange narrowing in excitonic systems

Details Anomalous strong exchange narrowing in excitonic systems Anomalous strong exchange narrowing in excitonic systems

2011-01-18

arxiv.org/abs/1101.3558v1

J. Chem. Phys. 134, 034901 (2011)

Physics

Quantum Physics

Scientific paper

10.1063/1.3528718

We investigate theoretically the phenomenon of exchange narrowing in the absorption spectrum of a chain of monomers, which are coupled via resonant dipole-dipole interaction. The individual (uncoupled) monomers exhibit a broad absorption line shape due to the coupling to an environment consisting of a continuum of vibrational modes. Upon increasing the interaction between the monomers, the absorption spectrum of the chain narrows. For a non-Markovian environment with a Lorentzian spectral density, we find a narrowing of the peak width (full width at half maximum (FWHM)) by a factor 1/N, where N is the number of monomers. This is much stronger than the usual 1/sqrt{N} narrowing. Furthermore it turns out that for a Markovian environment no exchange narrowing at all occurs. The relation of different measures of the width (FWHM, standard deviation) is discussed.

Affiliated with

Also associated with

No associations

Rating

Anomalous strong exchange narrowing in excitonic systems 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 Anomalous strong exchange narrowing in excitonic systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous strong exchange narrowing in excitonic systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-155761