We arrived at the DFT for Lennard-Jones fluid by constructing the excess free energy with MFMT and high-order FMSA.

• 通过采用MFMT和高阶FMSA展开分别表示硬球排斥和色散吸引作用对Helmholtz自由能泛函的贡献，得到了LJ流体的密度泛函方法。