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

H. Benthien, F. H. L. Essler, A. Grage
2006 Physical Review B  

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2005 pre-print arXiv:cond-mat/0509663v1 fatcat:qjdxk6gpfbd2hlbpjdak5vir2e
We consider the one-dimensional extended Hubbard model in the presence of an explicit dimerization δ. 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.
doi:10.1103/physrevb.73.085105 fatcat:4lj5gjm66fhapdlhjvl66vicbm
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H. Benthien, F. H. L. Essler, A. Grage. "Quantum phase transition in the one-dimensional extended Peierls-Hubbard model." Physical Review B 73.8 (2006)