Pete Ashwin

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  Minimal geometric networks and the dynamics of the Endoplasmic Reticulum
  Pete Ashwin
  The Endoplasmic Reticulum (ER) is an important and geometrically complex organelle within most living cells that can form highly dynamic network-like structures within the cell. This talk will discuss a study of some of these dynamic network structures within plant cells based on live cell imaging of movies showing dynamic ER networks. We hypothesise that the structures observed are minimal geometric networks perturbed by deterministic (cytoplasmic streaming) and random (Brownian) forces. We also try to quantify the biophysics behind the structures (joint work with Imogen Sparkes, Congping Lin and Yiwei Zhang).
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  Weak chimera states for small networks of oscillators
  Pete Ashwin
  This talk will look at emergent "chimera" dynamics in coupled oscillator systems composed of identical and indistinguishable oscillators. We propose a checkable definition of a weak chimera state and give some basic results on systems that can/cannot have chimera states in their dynamics using this definition. These include chimera states for systems of at least four oscillators with two coupling strengths.