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A real-space finite cluster approach to the correlated electron problem

โœ Scribed by J.H. Jefferson; W. Stephan

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
205 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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โœฆ Synopsis

A new finite-cluster method for the correlated electron problem has been applied to Hubbard and Heisenberg models and shown to yield accurate solutions for the ground-state and low-lying excited states of finite systems. Iterating this method results in much improved estimates of ground-state energy densities in the thermodynamic limit compared with the usual numerical renormalisation group approach.

๐Ÿ“œ SIMILAR VOLUMES

A finite-difference approach to the elec
A finite-difference approach to the electron correlation problem
โœ W. R. Fimple; M. J. Unwin ๐Ÿ“‚ Article ๐Ÿ“… 1976 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 625 KB

## Abstract A variant of the transcorrelated method of Boys and Handy employing finite differences is presented. It is based upon the following two properties of the transcorrelated Hamiltonian operator __C__^โˆ’1^__HC__: (1) __C__^โˆ’1^__HC__ possesses an energy eigenvalue spectrum which is identical