Ground-state wave function of the quantum Frenkel-Kontorova model

B. Hu, B. Li

Research output: Contribution to journalJournal articlepeer-review

18 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)655-660
Number of pages6
JournalEurophysics Letters
Issue number5
Publication statusPublished - Jun 1999

Scopus Subject Areas

  • Physics and Astronomy(all)


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