TY - JOUR
T1 - Gauge field optimization of classical fluid expansions
AU - ŠAMAJ, L.
AU - Percus, J. K.
N1 - Funding Information:
This work was supported by a grant from the National Science Foundation. The travel expenses of L.S. were covered by Grant VEGA No. 2/4109/97.
PY - 1999/2
Y1 - 1999/2
N2 - For fluid systems with pairwise particle interactions, the traditional Mayer diagrammatic series expansion of the grand potential in fugacity is generalized by introducing a gauge degree of freedom via local vertex factors. Finite series truncations are then used to determine variationally the effective gauge field. For a test model of hard-core particles in three dimensions, the accuracy of the results for the pressure, resulting from optimization of the first few truncation orders, is comparable with that of the best fitting formula proposed ad hoc by Carnahan, N. F., and Starling, K. E., 1969, J. chem. Phys., 51, 635.
AB - For fluid systems with pairwise particle interactions, the traditional Mayer diagrammatic series expansion of the grand potential in fugacity is generalized by introducing a gauge degree of freedom via local vertex factors. Finite series truncations are then used to determine variationally the effective gauge field. For a test model of hard-core particles in three dimensions, the accuracy of the results for the pressure, resulting from optimization of the first few truncation orders, is comparable with that of the best fitting formula proposed ad hoc by Carnahan, N. F., and Starling, K. E., 1969, J. chem. Phys., 51, 635.
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U2 - 10.1080/00268979909482978
DO - 10.1080/00268979909482978
M3 - Article
AN - SCOPUS:21544462031
VL - 96
SP - 443
EP - 449
JO - Molecular Physics
JF - Molecular Physics
SN - 0026-8976
IS - 3
ER -