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Enstrophy without boost symmetry (2103.06840v2)
Published 11 Mar 2021 in hep-th, cond-mat.soft, nucl-th, and physics.flu-dyn
Abstract: We construct an approximately conserved current for $2+1$ dimensional, Aristotelian (non boost invariant), fluid flow. When Aristotelian symmetry is enhanced to Galilean symmetry, this current matches the enstrophy current responsible for the inverse cascade in incompressible fluids. Other enhancements of Aristotelian symmetry discussed in this work include Lorentzian, Carrollian and Lifshitz scale symmetry.
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