Molecular fields and statistical field theory of fluids: Application to interface phenomena.

  title={Molecular fields and statistical field theory of fluids: Application to interface phenomena.},
  author={Nikolai V. Brilliantov and J. Miguel Rub{\'i} and Yu A Budkov},
  journal={Physical review. E},
  volume={101 4-1},
Using the integral transformation, the field-theoretical Hamiltonian of the statistical field theory of fluids is obtained along with the microscopic expressions for the coefficients of the Hamiltonian. Applying this approach to the liquid-vapor interface, we derive an explicit analytical expression for the surface tension in terms of temperature, density, and parameters of the intermolecular potential. We also demonstrate that a clear physical interpretation may be given to the formal… 
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