Variational localized-site cluster expansions. VIII. Projection of spin symmetries

✍ Scribed by D. J. Klein; M. A. García-Bach

• Publisher: John Wiley and Sons
• Year: 1977
• Tongue: English
• Weight: 552 KB
• Volume: 12
• Category: Article
• ISSN: 0020-7608
• DOI: 10.1002/qua.560120206

✦ Synopsis

Abstract

We investigate the total spin structure of an approximate localized‐site wave function for a collection of paramagnetic sites interacting so as to favor a singlet ground state. As the number of sites becomes infinite we obtain the distribution of weights of the different symmetry components of the localized site wave function; further, although only a very small fraction of such nonsymmetric wave functions is actually singlet, we find that it generally yields the same bulk property expectation values as its singlet‐projected component.