Quantum phase transition in the one-dimensional extended Peierls-Hubbard model

Details Quantum phase transition in the one-dimensional extended Peierls-Hubbard model Quantum phase transition in the one-dimensional extended Peierls-Hubbard model

2005-09-26

arxiv.org/abs/cond-mat/0509663v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 3 figures

Scientific paper

We consider the one-dimensional extended Hubbard model in the presence of an explicit dimerization $\delta$. For a sufficiently strong nearest neighbour repulsion we establish the existence of a quantum phase transition between a mixed bond-order wave and charge-density wave phase from a pure bond-order wave phase. This phase transition is in the universality class of the two-dimensional Ising model.

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