University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Wednesday, September 17th 2014
1:25 pm:
Nuclear Physics Seminar in 435 Physics
Speaker: Clint Young, University of Minnesota
Subject: Hydrodynamical fluctuations of the universe

The density, pressure, and flow velocities of any static fluid have fluctuations determined by statistical mechanics. An expanding, cooling, viscous fluid will have in its fluctuations the remnants of the large thermal noise from earlier times. This is not only true in heavy ion collisions but also in the early universe. In this talk, I will review earlier work on thermal fluctuations in FRW backgrounds, and outline how changes in phase and second-order hydrodynamical corrections can affect the shape and size of cosmological perturbations driven by thermal noise.

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