Thermodynamics of Frustrated Quantum Spin Chains

K. Maisinger and U. Schollwöck
Phys. Rev. Lett. 81, 445 – Published 13 July 1998
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Abstract

We apply the transfer-matrix density matrix renormalization group (DMRG) approach to frustrated quantum spin chains, down to T=0.025K in the thermodynamic limit. The incommensurability problem of exact diagonalization and the negative sign problem of quantum Monte Carlo vanish completely. For illustration, we give results for chains with next-nearest-neighbor frustration and for the delta chain, which has been a testbed for many thermodynamic methods. The DMRG approach proves to be an extremely powerful method for the old problem of the thermodynamics of frustrated systems.

  • Received 9 March 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.445

©1998 American Physical Society

Authors & Affiliations

K. Maisinger and U. Schollwöck

  • Sektion Physik, Ludwig-Maximilians-Universität München, Theresienstrasse 37, 80333 Munich, Germany

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Vol. 81, Iss. 2 — 13 July 1998

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