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Title:
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Proposal for a modified Moller-Plesset perturbation theory |
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Author:
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Cabo, Alejandro; Claro, Francisco; Menéndez Proupin, Eduardo
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Abstract:
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A modified version of the Moller-Plesset approach for obtaining the correlation energy associated with a Hartree-Fock ground state is proposed. The method is tested in a model of interacting fermions that allows for an exact solution. Using up to third order terms improved results are obtained, even in the limit of loosely bound particles. Tested in molecules as well, the modified method appears to give improved results in symmetric systems. |
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URI:
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http://www.captura.uchile.cl/handle/2250/5452
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Date:
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2006-01 |
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dc.identifier.citation:
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PHYSICAL REVIEW A Volume: 73 Issue: 1 Article Number: 012510 Published: JAN 2006 |