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• W1665579770 abstract "Computational modeling of the condensed phase based on classical statistical mechanics has been rapidly developing over the last few decades and has yielded important information on various systems containing up to millions of atoms. However, if a system of interest contains important quantum effects, well-developed classical techniques cannot be used. One way of treating finite temperature quantum systems at equilibrium has been based on Feynman's imaginary time path integral approach and the ensuing quantum-classical isomorphism. This isomorphism is exact only in the limit of infinitely many classical quasiparticles representing each physical quantum particle. In this work, we present a reductionist perspective on this problem based on the emerging methodology of coarse-graining. This perspective allows for the representations of one quantum particle with only two classical-like quasiparticles and their conjugate momenta. One of these coupled quasiparticles is the centroid particle of the quantum path integral quasiparticle distribution. Only this quasiparticle feels the potential energy function. The other quasiparticle directly provides the observable averages of quantum mechanical operators. The theory offers a simplified perspective on quantum statistical mechanics, revealing its most reductionist connection to classical statistical physics. By doing so, it can facilitate a simpler representation of certain quantum effects in complex molecular environments." @default.
• W1665579770 created "2016-06-24" @default.
• W1665579770 creator A5041676098 @default.
• W1665579770 creator A5088327041 @default.
• W1665579770 date "2015-09-02" @default.
• W1665579770 modified "2023-09-27" @default.
• W1665579770 title "A reductionist perspective on quantum statistical mechanics: Coarse-graining of path integrals" @default.
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• W1665579770 doi "https://doi.org/10.1063/1.4929790" @default.
• W1665579770 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26342356" @default.
• W1665579770 hasPublicationYear "2015" @default.
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