Phase diagram of the spin-Peierls chain with local coupling

Alan R. Bishop; Alexander Weisse; Georg Hager; Holger Fehske

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Phase diagram of the spin-Peierls chain with local coupling

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arxiv cond-mat/0607209 v1 pith:R4ZAL6EY submitted 2006-07-07 cond-mat.str-el

Phase diagram of the spin-Peierls chain with local coupling

Alexander Weisse , Georg Hager , Alan R. Bishop , Holger Fehske This is my paper

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We explore the ground-state phase diagram of a Heisenberg spin chain coupled locally to optical phonons (bond coupling), using large-scale density matrix renormalization group calculations and an extended perturbative analysis. For the quantum phase transition from the spin liquid to the dimerized phase, we find deviations from previous quantum Monte Carlo and flow equation results.

Phase diagram of the spin-Peierls chain with local coupling

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