Accession Number : ADA265648


Title :   Infinite Volume Extrapolations of Finite Cluster Calculations-How Correct Are These


Descriptive Note : Professional paper,


Corporate Author : NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA


Personal Author(s) : Mazumdar, S ; Guo, F ; Guo, D ; Ung, K-C ; Gammel, J T


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a265648.pdf


Report Date : May 1993


Pagination or Media Count : 27


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.


Descriptors :   *COMPUTATIONS , *CLUSTERING , *EXTRAPOLATION , MATHEMATICAL MODELS , TWO PHOTON ABSORPTION , APPLIED MATHEMATICS , SUPERCONDUCTIVITY , ABSORPTION , PHOTONS , INTENSITY


Subject Categories : Statistics and Probability


Distribution Statement : APPROVED FOR PUBLIC RELEASE