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Finite-temperature density matrix renormalization using an enlarged Hilbert space
Phys. Rev. B 72, 220401(R) – Published 2 December, 2005
DOI: https://doi.org/10.1103/PhysRevB.72.220401
Abstract
We apply a generalization of the time-dependent density matrix renormalization group (DMRG) to study finite-temperature properties of several quantum spin chains, including the frustrated 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.
Article Text
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