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Type: Artigo de periódico
Title: On Pad́ Approximants To Virial Series
Author: Guerrero A.O.
Bassi A.B.M.S.
Abstract: Pad́ approximants have long been used to predict virial series coefficients and to provide equations of state for low and high density materials. However, some justified criticism has appeared about this procedure. Although we agree to impose several restrictions on the use of Pad́ approximants, we indicate that the Pad́ approximant is still an excellent way to predict the first unknown virial series coefficients. As an example, we report a calculation of the B11 =128.6 and B12 =155 virial coefficients of the three dimensional hard sphere model that are in excellent agreement with the two most recent estimates. We also consider that the commonly used method to choose among Pad́ approximants is not completely reliable for this specific application and suggest an alternative new method. © 2008 American Institute of Physics.
Rights: aberto
Identifier DOI: 10.1063/1.2958914
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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