On the Thermodynamics of Global Optimization

Details On the Thermodynamics of Global Optimization On the Thermodynamics of Global Optimization

1997-09-01

arxiv.org/abs/cond-mat/9709019v1

Phys. Rev. Lett. 80, 1357 (1998)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures, revtex

Scientific paper

10.1103/PhysRevLett.80.1357

Theoretical design of global optimization algorithms can profitably utilize recent statistical mechanical treatments of potential energy surfaces (PES's). Here we analyze a particular method to explain its success in locating global minima on surfaces with a multiple-funnel structure, where trapping in local minima with different morphologies is expected. We find that a key factor in overcoming trapping is the transformation applied to the PES which broadens the thermodynamic transitions. The global minimum then has a significant probability of occupation at temperatures where the free energy barriers between funnels are surmountable.

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