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research article

Testing Theories of the Glass Transition with the Same Liquid but Many Kinetic Rules

Gavazzoni, Cristina
•
Brito, Carolina
•
Wyart, Matthieu  
June 11, 2024
Physical Review Letters

We study the glass transition by exploring a broad class of kinetic rules that can significantly modify the normal dynamics of supercooled liquids while maintaining thermal equilibrium. Beyond the usual dynamics of liquids, this class includes dynamics in which a fraction ( 1 - f R ) of the particles can perform pairwise exchange or "swap moves, " while a fraction f P of the particles can move only along restricted directions. We find that (i) the location of the glass transition varies greatly but smoothly as f P and f R change and (ii) it is governed by a linear combination of f P and f R . (iii) Dynamical heterogeneities (DHs) are not governed by the static structure of the material; their magnitude correlates instead with the relaxation time. (iv) We show that a recent theory for temporal growth of DHs based on thermal avalanches holds quantitatively throughout the ( f R ; f P ) diagram. These observations are negative items for some existing theories of the glass transition, particularly those reliant on growing thermodynamic order or locally favored structure, and open new avenues to test other approaches, as we illustrate.

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Type
research article
DOI
10.1103/PhysRevLett.132.248201
Web of Science ID

WOS:001246817200007

Author(s)
Gavazzoni, Cristina
•
Brito, Carolina
•
Wyart, Matthieu  
Date Issued

2024-06-11

Publisher

Amer Physical Soc

Published in
Physical Review Letters
Volume

132

Issue

24

Article Number

248201

Subjects

Physical Sciences

•

Supercooled Liquids

•

Dynamics

•

Relaxation

•

Models

•

Phase

•

Order

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
PCSL  
FunderGrant Number

Simons Foundation

454953

Swiss National Science Foundation (SNSF)

200021-165509

Brazilian agency Fundacao Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)

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Available on Infoscience
July 3, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/209053
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