# Gauge/Gravity Duality 2021

Jul 26 – 28, 2021
CERN
Europe/Zurich timezone

## Enstrophy from symmetry and holography

Jul 28, 2021, 1:30 PM
45m
ZOOM only (CERN)

### Speaker

Natalia Pinzani Fokeeva

### Description

Enstrophy is an approximately conserved quantity in 2+1 dimensional fluid flows that has dramatic consequences for the phenomenology of turbulence: it implies an inverse energy cascade in 2+1 dimensions.
In this talk, I will illustrate an algorithm to construct an enstrophy current for fluid flows with various degrees of symmetry, including, but not limited to, the well-known case of non-relativistic (Galilean) fluid flows.
Moreover, I will identify the accidental symmetry associated with enstrophy conservation in a recently realized effective action for hydrodynamics.
Finally, I will show how horizon symmetries of 3+1 dimensional black holes with Anti-de Sitter asymptotics also lead to enstrophy conservation.

### Presentation materials

 Gauge_Gravity2021Pinzani.pdf Recording