Volume 121, Number 3, February 2018
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||06 April 2018|
Anomalous glassy dynamics in simple models of dense biological tissue
Department of Physics and Soft and Living Matter Program, Syracuse University - Syracuse, NY 13244, USA
Received: 15 December 2017
Accepted: 13 March 2018
In order to understand the mechanisms for glassy dynamics in biological tissues and shed light on those in non-biological materials, we study the low-temperature disordered phase of 2D vertex-like models. Recently it has been noted that vertex models have quite unusual behavior in the zero-temperature limit, with rigidity transitions that are controlled by residual stresses and therefore exhibit very different scaling and phenomenology compared to particulate systems. Here we investigate the finite-temperature phase of two-dimensional Voronoi and Vertex models, and show that they have highly unusual, sub-Arrhenius scaling of dynamics with temperature. We connect the anomalous glassy dynamics to features of the potential energy landscape associated with zero-temperature inherent states.
PACS: 64.70.Q- – Theory and modeling of the glass transition / 63.50.Lm – Glasses and amorphous solids / 61.20.Gy – Theory and models of liquid structure
© EPLA, 2018
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