Theoretical Physics Colloquium

Blast in the one-dimensional cold gas: From Newton to Euler and Navier-Stokes-Fourier

by Prof. Abhishek Dhar (TIFR-ICTS, Bengaluru)

Tuesday, May 4, 2021 from to (Asia/Kolkata)
at Zoom
Description
It is known that a gas composed of a large number of atoms following Newtonian dynamics can be described by the continuum laws of hydrodynamics. Proving this rigorously is one of the outstanding open problems in physics and mathematics. Surprisingly, precise numerical demonstrations of the equivalence of the hydrodynamic and microscopic descriptions are rare. The  talk will discuss  recent numerical tests of  this equivalence in the context of the classic problem of the evolution of a blast-wave, a problem that is expected to be at the limits where hydrodynamics would work.