PIRSA:11100097 Scientific Series Quantum Fields and Strings

DOI10.48660/11100097

Series: Quantum Fields and Strings

Kovtun, P. (2011). Fluctuations and Viscosity. Perimeter Institute. https://pirsa.org/11100097

Kovtun, Pavel. Fluctuations and Viscosity. Perimeter Institute, Oct. 13, 2011, https://pirsa.org/11100097 

@misc{ pirsa_PIRSA:11100097,
  doi = {10.48660/11100097},
  url = {https://pirsa.org/11100097},
  author = {Kovtun, Pavel},
  keywords = {Quantum Fields and Strings},
  language = {en},
  title = {Fluctuations and Viscosity},
  publisher = {Perimeter Institute},
  year = {2011},
  month = {oct},
  note = {PIRSA:11100097 see, \url{https://pirsa.org}}
}

Abstract

Sound waves with long-distance propagation are both a consequence of hydrodynamics, and a danger to hydrodynamics' very existence, as they violate the assumption of local equilibration. In the talk, I will discuss what the thermally excited sound and shear waves do to viscosity. In 2+1 dimensions, the shear viscosity and the diffusion constant cease being independent transport coefficients. In 3+1 dimensions, the fluctuations render the second-order hydrodynamics invalid.

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