Date: Mon, December 11, (17:00)-19:00
Place: Room Dw601, D Block, IIS, The University of Tokyo

Invited Speaker: Prof. Sudeshna Sinha (Institute of Mathematical Sciences)

Title: Spatiotemporal Consequences of Random Non-local Coupling

Abstract:
We will discuss the spatiotemporal dynamics of networks of coupled
chaotic maps, with varying degrees of randomness in coupling
connections. In such systems, while strictly nearest neighbour coupling
never allows spatiotemporal synchronization, randomly rewiring some of
those connections can stabilise the entire network at the strongly
unstable fixed point solution of the local chaotic map. We show, both
analytically and numerically, how the range of synchronization increases
with degree of randomness. Further we present some results on the
effects of random coupling on networks of bio-chemical pathways and on
networks of model neurons (both identical and non-identical). Finally we
show how dynamic rewiring enhances synchronization significantly more
than static (quenched) random links.