Among amorphous states, glass is defined by relaxation times longer than the observation time. This nonergodic nature makes the understanding of glassy systems an involved topic, with complex aging effects or responses to further out-of-equilibrium external drivings. In this respect, active glasses made of self-propelled particles have recently emerged as a stimulating systems, which broadens and challenges our current understanding of glasses by considering novel internal out-of-equilibrium degrees of freedom. In previous experimental studies we have shown that in the ergodicity broken phase, the dynamics of dense passive particles first slows down as particles are made slightly active, before speeding up at larger activity. Here, we show that this nonmonotonic behavior also emerges in simulations of soft active Brownian particles and explore its cause. We refute that the deadlock by emergence of active directionality model we proposed earlier describes our data. However, we demonstrate that the nonmonotonic response is due to activity enhanced aging and thus confirm the link with ergodicity breaking. Beyond self-propelled systems, our results suggest that aging in active glasses is not fully understood.
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21 April 2022
Research Article|
April 21 2022
Aging or DEAD: Origin of the non-monotonic response to weak self-propulsion in active glasses
Special Collection:
Slow Dynamics
Natsuda Klongvessa
;
Natsuda Klongvessa
a)
1
School of Physics, Center of Excellence in Advanced Functional Materials, Institute of Science, Suranaree University of Technology
, 3000 Nakhon Ratchasima, Thailand
2
Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière
, F-69622 Villeurbanne, France
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Christophe Ybert
;
Christophe Ybert
2
Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière
, F-69622 Villeurbanne, France
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Cécile Cottin-Bizonne
;
Cécile Cottin-Bizonne
2
Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière
, F-69622 Villeurbanne, France
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Takeshi Kawasaki
;
Takeshi Kawasaki
3
Department of Physics, Nagoya University
, 464-8602 Nagoya, Japan
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Mathieu Leocmach
Mathieu Leocmach
b)
2
Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière
, F-69622 Villeurbanne, France
b)Author to whom correspondence should be addressed: [email protected]
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Natsuda Klongvessa
1,2,a)
Christophe Ybert
2
Cécile Cottin-Bizonne
2
Takeshi Kawasaki
3
Mathieu Leocmach
2,b)
1
School of Physics, Center of Excellence in Advanced Functional Materials, Institute of Science, Suranaree University of Technology
, 3000 Nakhon Ratchasima, Thailand
2
Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière
, F-69622 Villeurbanne, France
3
Department of Physics, Nagoya University
, 464-8602 Nagoya, Japan
a)
Now in: Faculty of Medicine, Bangkokthonburi University, 10170 Bangkok, Thailand.
b)Author to whom correspondence should be addressed: [email protected]
Note: This paper is part of the JCP Special Topic on Slow Dynamics.
J. Chem. Phys. 156, 154509 (2022)
Article history
Received:
February 07 2022
Accepted:
April 05 2022
Citation
Natsuda Klongvessa, Christophe Ybert, Cécile Cottin-Bizonne, Takeshi Kawasaki, Mathieu Leocmach; Aging or DEAD: Origin of the non-monotonic response to weak self-propulsion in active glasses. J. Chem. Phys. 21 April 2022; 156 (15): 154509. https://doi.org/10.1063/5.0087578
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