RIKEN Lunch Seminar

"Kinetic regime of hydrodynamic fluctuations"

Presented by Yukinao Akamatsu, Stony Brook University

Thursday, February 4, 2016, 12:30 pm — Building 510 Room 2-160

Hydrodynamics is an effective theory of systems close to equilibrium. It has been applied to description of fireballs created in the heavy-ion collisions. With growing interests in fluctuation of observables, theoretical identification of its origin is crucial. One of such origins is thermal fluctuation required by the fluctuation-dissipation theorem. In this talk, I will present a new insight into the thermal fluctuation of hydrodynamics by separating the hard and soft scales in a given background. As an illustration, we adopt the Bjorken expansion as a background. The kinetic description of hard modes allows us simple interpretation of renormalization, long-time tails, and fractional powers of derivative expansion.

Hosted by: Hiroshi Ohki

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