Finite Temperature Density Matrix Renormalization using an enlarged Hilbert space

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We apply a generalization of the time-dependent DMRG to study finite temperature properties of several quantum spin chains, including the frustrated $J_1-J_2$ model. We discuss several practical issues with the method, including use of quantum numbers and finite size effects. We compare with transfer-matrix DMRG, finding that both methods produce excellent results.
4 pages and 4 figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/102680

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0510124
 http://arxiv.org/abs/cond-mat/0510124
 Phys. Rev. B 72, 220401 (2005)
 doi:10.1103/PhysRevB.72.220401

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arXiv