Thermodynamics of frustrated quantum spin chains

被引：43

作者：

Maisinger, K ^{[1
]}

Schollwock, U ^{[1
]}

机构：

[1] Univ Munich, Sekt Phys, D-80333 Munich, Germany

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.81.445

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We apply the transfer-matrix density matrix renormalization group (DMRG) approach to frustrated quantum spin chains, down to T = 0.025 K 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.

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页码：445 / 448

页数：4

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