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Type: Artigo de periódico
Title: Interatomic potential for the condensed phases of helium atoms
Author: Ujevic, S
Vitiello, SA
Abstract: Results from diffusion Monte Carlo have been used in fits of a damping function of the triple dipole and of the intensity of the exchange three-body interactions. The equations of state obtained considering this three-body potential are in excellent agreement with experiment both at the solid and liquid phases. The calculations show that exchange nonadditivities that contribute less than 0.2% of the two-body potential energy in the solid phase are needed to describe the properties of a system of helium atoms.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.73.012511
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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