期刊
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
卷 363, 期 1827, 页码 493-508出版社
ROYAL SOC
DOI: 10.1098/rsta.2004.1504
关键词
liquid water simulation; water clusters; water potential energy surface; first principles water; diffusion quantum Monte Carlo; vibration-rotation-tunnelling spectroscopy
We present results of gas phase cluster and liquid water simulations from the recently determined VRT(ASP-W)III water dimer potential energy surface (the third fitting of the Anisotropic Site Potential with Woermer dispersion to vibration-rotation-tunnelling data). VRT(ASP-W)III is shown to not only be a model of high 'spectroscopic' accuracy for the water dimer, but also makes accurate predictions of vibrational ground-state properties for clusters up through the hexamer. Results of ambient liquid water simulations from VRT(ASP-W)III are compared with those from ab initio molecular dynamics, other potentials of 'spectroscopic' accuracy and with experiment. The results herein represent the first time to the authors knowledge that a 'spectroscopic potential surface is able to correctly model condensed phase properties of water.
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