Phase diagram of the spin-Peierls chain with local coupling

Details Phase diagram of the spin-Peierls chain with local coupling Phase diagram of the spin-Peierls chain with local coupling

2006-07-07

arxiv.org/abs/cond-mat/0607209v1

Phys. Rev. B 74, 214426 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.74.214426

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.

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