— G2 G This yields p(x). —I exp[ {— V(x) + In G}] Now introduce the 'econodynamic' entropy We then obtain The effective 'internal' energy is The 'Hemholtz' Free energy is S = —(In p(x)) F =U — DS U(x)=V + EMIG F=—DIn¥ (1.13) (1.14) (1.15) (1.16) (1.17) (1.18) ¥ is the partition function for our mod