Memory Formation in Jammed Hard Spheres

Liquids equilibrated below an onset condition share similar inherent states, while those above that onset have inherent states that markedly differ. Although this type of materials memory was first reported in simulations over 20 years ago, its physical origin remains controversial. Its absence from...

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Bibliographic Details
Published in:Physical review letters 2021-02, Vol.126 (8), p.088001-088001, Article 088001
Main Authors: Charbonneau, Patrick, Morse, Peter K
Format: Article
Language:English
Subjects:
Algorithms
Jamming
Phenomenology
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Summary:Liquids equilibrated below an onset condition share similar inherent states, while those above that onset have inherent states that markedly differ. Although this type of materials memory was first reported in simulations over 20 years ago, its physical origin remains controversial. Its absence from mean-field descriptions, in particular, has long cast doubt on its thermodynamic relevance. Motivated by a recent theoretical proposal, we reassess the onset phenomenology in simulations using a fast hard sphere jamming algorithm and find it to be both thermodynamically and dimensionally robust. Remarkably, we also uncover a second type of memory associated with a Gardner-like regime of the jamming algorithm.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.126.088001