Optical conductivity of a quasi one-dimensional system with fluctuating order
Abstract
We describe a formally exact method to calculate the optical conductivity of a one-dimensional system with fluctuating order. For classical phase fluctuations we explicitly determine the optical conductivity by solving two coupled Fokker-Planck equations numerically. Our results differ considerably from perturbation theory and, in contrast to Gaussian order parameter fluctuations, show a strong dependence on the correlation length.
- Publication:
-
EPL (Europhysics Letters)
- Pub Date:
- January 2004
- DOI:
- 10.1209/epl/i2003-10042-2
- arXiv:
- arXiv:cond-mat/0308280
- Bibcode:
- 2004EL.....65...68B
- Keywords:
-
- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Disordered Systems and Neural Networks
- E-Print:
- 7 pages, 2 figures