Thermodynamics of the anisotropic Heisenberg chain calculated by the density matrix renormalization group method

Preprint

30 July 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9706152

Abstract

The density matrix renormalization group (DMRG) method is applied to the anisotropic Heisenberg chain at finite temperatures. The free energy of the system is obtained using the quantum transfer matrix which is iteratively enlarged in the imaginary time direction. The magnetic susceptibility and the specific heat are calculated down to T=0.01J and compared with the Bethe ansatz results. The agreement including the logarithmic correction in the magnetic susceptibility at the isotropic point is fairly good.

Keywords

ANISOTROPIC HEISENBERG CHAIN
MAGNETIC SUSCEPTIBILITY
MATRIX RENORMALIZATION
RENORMALIZATION GROUP
CHAIN CALCULATED
HEISENBERG CHAIN
DENSITY MATRIX

All Related Versions

Version 1, 1997-06-15, ArXiv
Version 2, 1997-07-30, ArXiv
Published version: Journal of the Physics Society Japan, 66 (8), 2221.

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