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Scaling Index $\alpha = \frac{1}{2}$ In Turbulent Area Law
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abstract
We analyze the Minimal Area solution to the Loop Equations in turbulence \cite{M93}. As it follows from the new derivation in the recent paper \cite{M19}, the vorticity is represented as a normal vector to the minimal surface not just at the edge, like it was assumed before, but all over the surface. As it was pointed in that paper, the self-consistency relation for mean vorticity leads to $\alpha=\frac{1}{2}$, however the similar conditions for product of two and more vorticities cannot be satisfied without extra terms, which were left undetermined in that paper. In this paper we find these missing terms -- they are delta functions at coinciding points which must be taken into considerations in surface integrals. We compare this value of $\alpha$ with new measurements of the same team which confirmed the area law \cite{S19} and we find that asymptotic formula $\lambda(p) \approx 2 \alpha p + \beta \ln p$, with $\alpha =0.49 \pm 0.02, \beta= 0.92 \pm 0.01 $, fits all data at $p=3,...10$ within error bars.
Forward citations
Cited by 2 Pith papers
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Area and Perimeter Rules of Velocity Circulation in Two-Dimensional Turbulence with Large-scale Absolute Equilibrium
In the absolute equilibrium of 2D turbulence, circulation statistics depend only on loop area under enstrophy equipartition and only on loop perimeter under energy equipartition, with a proposed perimeter rule for the...
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Superloop Equations and Minimal Surfaces I: Confining minimal surface in $4D, N=1$ SYM
A geometrically constructed surface-area phase is proven to dress any solution of the finite-N N=1 SYM superloop hierarchy and produces a rectangular Wilson phase exp(-iσLT) with arbitrary positive σ.
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