Abstract
The effect of quantum fluctuations of the phonon field on the ground-state character of one-dimensional electron-phonon systems is studied with a numerical simulation technique. Two different electron-phonon models are studied, both for spinless and spin-½ electrons, in the half-filled-band case. In both models, it is found that in the spinless case quantum fluctuations destroy the long-range dimerization order for small electron-phonon coupling constant . For the spin-½ case, the results are consistent with the Peierls transition occurring at .
- Received 28 April 1982
DOI:https://doi.org/10.1103/PhysRevLett.49.402
©1982 American Physical Society