Collins Conference Room
  US Mountain Time
Mark Neyrinck (Durham University)

This event is private.

The Geometry of the Cosmic Web and the Flow of Primordial Information Through It

Abstract:  First I will describe a class of networks with geometries based on a particular generalization of a Voronoi diagram. In, we discussed a few networks in this class: the cosmic web (the large-scale spatial arrangement of matter in the universe); spiderwebs, structural-engineering networks that can be strung up to be either entirely in tension (like a spiderweb) or entirely in compression (like a tree); and origami tessellations. Other networks likely fall into this class, and I would love to hear what some SFI members think.

Also, I will briefly describe what happens to 'primordial information' as the cosmic web forms. The standard picture is that in the first instants of the universe, just after the Big Bang, a pattern of random quantum density fluctuations was laid down, called primordial information. In patches that form the cosmic web, the small-scale primordial information inside them is at least partially lost. The pattern of fluctuations provides a blueprint for the deterministic and one-to-one formation of structures on large scales. At small scales, the structure is no longer deterministic, and it is an open question where this boundary in scale lies.

Research Collaboration
SFI Host: 
Jennifer Dunne