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Investigation of phase instability in the binary Gaussian core model

Guo Yuan-Yuan Chen Xiao-Song

Investigation of phase instability in the binary Gaussian core model

Guo Yuan-Yuan, Chen Xiao-Song
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  • Abstract views:  3176
  • PDF Downloads:  766
  • Cited By: 0
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  • Received Date:  06 February 2005
  • Accepted Date:  25 July 2005
  • Published Online:  20 December 2005

Investigation of phase instability in the binary Gaussian core model

  • 1. 华中师范大学粒子物理研究所,武汉 430079;中国科学院理论物理研究所,北京 100080

Abstract: By considering the fluctuation of grand potential Ω around equilibrium with respect to small density fluctuations δρα(r), the phase instability of binary Gaussian core model has been investigated and characterized. The spinodal of this model is obtained by using its direct correlation functions calculated in the hypernetted chain(HNC) approximation. Our analysis shows that this phase transition is predominately demixing. The results in HNC approximation have been compared with that in the random phase approximation.

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