No free lunch for effective potentials: general comment for Faraday FD144

Abstract

I briefly review the problem of representability -- a single coarse-grained effective pair potential cannot simultaneously represent all the properties of an underlying more complex system -- as well as a few other subtleties that can arise in interpreting coarse-grained potentials.

arXiv commentcomment for Faraday Discussion 144: Multiscale Modelling of Soft Matter -- part of a much larger discussion on these topics

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