Speaker: Ari Laor (Technion)
Title: Why are Power Law distributions so prevalent in nature?
Abstract: Power-law (PL) distribution functions (DF) are found in highly diverse systems. 
From the mass distribution of grains in the interstellar medium, of pebbles 
in riverbeds, of astroids, and up to clusters of galaxies. The distribution of energy release 
in earthquakes and forest fires. The distributions of population density, of personal income, 
value of companies, etc’ etc’. A variety of different mechanisms were suggested, even in
a given system, but why are PL DF so prevalent? We study the formation of a PL DF in 
the simple physical system of colliding hard sphere. We find three general conditions which 
necessarily lead to a PL DF. These conditions apply in a great variety of systems, which may 
explain why PL DF are so prevalent in nature.
Zoom link: https://huji.zoom.us/j/89943058366?pwd=gd9baspAKwzbvqlGCqyKd9EzFF3cAw.1
Meeting ID: 899 4305 8366
Passcode: 142977
Contact: David Barba González