Aging in thermal active glasses

Janzen, Giulia; Janssen, Liesbeth M. C.

doi:10.1103/physrevresearch.4.l012038

“…In short, we explore the dynamics of interacting chiral active Brownian particles (CABPs) [28,42] and show that when pushed to glassy conditions our chiral fluid exhibits highly nontrivial dynamics, particularly compared to standard linear active glassy matter (that is, conventional ABPs), which has already been extensively studied in theory [50][51][52][53][54][55][56][57][58][59] and simulation [60][61][62][63][64][65][66][67][68][69][70][71][72]. Despite the added complexity, we are still able to present a full rationalization for all identified dynamical regimes, including the emergence of a complex reentrant behavior which we explain by invoking the aforementioned hammering mechanism.…”

mentioning

confidence: 99%

Glassy Dynamics in Chiral Fluids

Debets

¹

,

Löwen

²

,

Janssen

³

2023

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published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User

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“…Investigations of other active-matter models should be carried out to determine the generality of our findings. If they are general, the introduction of polydispersity may have applications to instances of non-polydisperse active-matter models for which the system in question is difficult to equilibrate because of extremely long relaxation times [39,40]. The idea is to employ 'activity-induced annealing' [41] for a polydisperse system.…”

Section: Discussionmentioning

confidence: 99%

Active-parameter polydispersity in the 2d ABP Yukawa model

Saw,

Costigliola,

Dyre

2024

J. Phys.: Condens. Matter

2

0

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In both experiments and simulations the most commonly studied kind of parameter polydispersity is that of varying particles size. This paper investigates by simulations the effects of introducing polydispersity in other parameters for two-dimensional Active Brownian Particles with Yukawa pair interactions. Polydispersity is studied separately in the translational and rotational diffusion coefficients, as well as in the swim velocity $v_0$. Uniform and binary parameter distributions are considered in both the homogeneous and the motility-induced phase-separation (MIPS) phases. We find only minute changes in structure and dynamics upon the introduction of parameter polydispersity, even for situations involving 50\% polydispersity. The reason for this is not clear. An exception is the case of $v_0$ polydispersity for which the average radial distribution function with changing polydispersity shows significant variations in the MIPS phase. Even in this case, however, the dynamics is only modestly affected. As a possible application of our findings, we suggest that a temporary introduction of polydispersity into a single-component active-matter model characterized by a very long equilibration time, i.e., a glass-forming active system, may be used to equilibrate the system efficiently by particle swaps.

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“…Moreover, the dataset consists of 20 independent configurations since they are sufficient to obtain good performance. After the equilibration process we apply a quench to the final temperature T q , which is lower than 025602-2 the glass transition temperature T g (for this system T g ≈ 0.4 [60][61][62]). We use quenching temperatures between T q = 0.1 and T q = 0.375 and collect data for waiting times between 0 and 10 4 .…”

Section: B Agingmentioning

confidence: 99%

“…To verify that this model also works for an active particle system, we study ABPs with an active force f = 0.5, a persistence time τ r = 1, and a quenching temperature T q = 0.25. We chose these parameters such that the relaxation times of the active and passive systems are of the same order of magnitude [62].…”

Section: B Agingmentioning

confidence: 99%

Classifying the age of a glass based on structural properties: A machine learning approach

Janzen,

Smit,

Visbeek

et al. 2024

Phys. Rev. Materials

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published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User

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Aging in thermal active glasses

Cited by 17 publications

References 69 publications

Glassy Dynamics in Chiral Fluids

Glassy Dynamics in Chiral Fluids

Active-parameter polydispersity in the 2d ABP Yukawa model

Classifying the age of a glass based on structural properties: A machine learning approach

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