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arXiv · 1712.05758

Anomalous glassy dynamics in simple models of dense biological tissue

Daniel M. Sussman·M. Paoluzzi·M. Cristina Marchetti·M. Lisa Manning
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Abstract

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.

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Daniel M. Sussman, M. Paoluzzi, M. Cristina Marchetti, M. Lisa Manning. 2017-12-15. Anomalous glassy dynamics in simple models of dense biological tissue. https://doi.org/10.1209/0295-5075/121/36001

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