Physics PAN Seminar by Prof. Giorgio Torrieri (Unicamp, Brazil)

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Date: October 29, 2021
Time: 3:30 p.m. - 4:30 p.m.
Location: Virtual event
Category: Seminar

Physics PAN Seminar by Prof. Giorgio Torrieri (Unicamp, Brazil)

Title: Making sense of Hydrodynamics with 50 particles

Abstract: The observation, in hadronic collisions, of "ideal fluid" type
behavior in systems of a comparatively small number of particles,
presents a conceptual puzzle, since the way we usually derive
hydrodynamics is via approximating "many" particles as a continuum.
I will argue that making sense of this requires re-deriving
relativistic hydrodynamics as a "bottom-up" theory, with no reference
to microscopic physics except the local emergence of a thermalized
system.
This is in contrast to usual attempts to understand hydrodynamics as a
"top-down" theory, in terms of models such as transport and
holographic strongly coupled systems.
We attempt to do this using basic statistical mechanics, and find the
apparently counter-intuitive conclusion that in the small viscosity
limit it might indeed be that smaller systems could thermalize faster.

Based on
https://arxiv.org/abs/2007.09224
https://arxiv.org/abs/2109.06389

 Meeting Recording: https://wayne-edu.zoom.us/rec/share/LLanLNqxdMLvvEcBXxuxANt8Rxp5zX5ddaQ3HAiYIeP3rwHIGsDJlcUUbOphRSHD.KBafeG31DDJVgjZF

 

Slides: https://waynestateprod-my.sharepoint.com/:b:/g/personal/gx1689_wayne_edu/ETvlr0OIbqtBv6krAejrDoQB8dLCTOkmw9Yz76zErzHLyA?e=7sXOBa

 

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