Quantum phase transition in one-dimensional commensurate frenkel-kontorova model

Yongjun Ma, Jiaxiang Wang, Xinye Xu, Qi Wei, Sabre Kais

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Abstract

We have studied the one-dimensional commensurate quantum Frenkel-Kontorova model by using a density-matrix renormalization group (DMRG) algorithm. The focus has been on its properties of entanglement, coordinate correlation, ground-state energy and energy gap between the ground state and the first excited state. It is demonstrated that a quantum phase transition (QPT) between the pinned and the sliding phases takes place as the quantum fluctuation, measured on the basis of an effective Planck constant h , increases to a threshold value hc. 2014 The Physical Society of Japan.

Original languageEnglish
Article number124603
JournalJournal of the Physical Society of Japan
Volume83
Issue number12
DOIs
Publication statusPublished - 15 Dec 2014

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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