Infinite Volume Extrapolations of Finite Cluster Calculations, ---How Correct are These?

S. Mazumdar; F. Guo; D. Guo; K. -C. Ung; J. Tinka Gammel

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Infinite Volume Extrapolations of Finite Cluster Calculations, ---How Correct are These?

S. Mazumdar·F. Guo·D. Guo·K. -C. Ung·J. Tinka Gammel

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Abstract

Extrapolations of numerical data obtained from finite cluster calculations to the infinite volume limit can often give incorrect results. We discuss four separate cases: (a) the intensity of the lowest two-photon absorption in the infinite polyene, (b) bond alternation in the infinite polyene, (c) Cooper type pairing in the simple Hubbard model, and (d) pairing within the extended Hubbard model.

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S. Mazumdar, F. Guo, D. Guo, K. -C. Ung, J. Tinka Gammel. 1993-03-01. Infinite Volume Extrapolations of Finite Cluster Calculations, ---How Correct are These?. https://arxiv.org/abs/cond-mat/9303003

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