Issue |
Europhys. Lett.
Volume 46, Number 5, June I 1999
|
|
---|---|---|
Page(s) | 655 - 660 | |
Section | Condensed matter: structure, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i1999-00315-2 | |
Published online | 01 September 2002 |
Ground-state wave function of the quantum Frenkel-Kontorova model
1
Department of Physics and Centre for Nonlinear Studies Hong
Kong Baptist University - Hong Kong, China
2
Department of Physics, University of Houston Houston TX
77204-5506, USA
Received:
21
December
1998
Accepted:
29
March
1999
The wave function of an incommensurate ground state for a one-dimensional discrete sine-Gordon model—the Frenkel-Kontorova (FK) model—at zero temperature is calculated by the quantum Monte Carlo method. It is found that the ground state wave function crosses over from an extended state to a localized state when the coupling constant exceeds a certain critical value. So, although the quantum fluctuation has smeared out the breaking of analyticity transition as observed in the classical case, the remnant of this transition is still discernible in the quantum regime.
PACS: 64.70.Rh – Commensurate-incommensurate transitions / 64.70.-p – Specific phase transitions
© EDP Sciences, 1999
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.