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Passive scalars, random flux, and chiral phase fluids

Jonathan Miller·Jane Wang
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Abstract

We study the two-dimensional localization problem for (i) a classical diffusing particle advected by a quenched random mean-zero vorticity field, and (ii) a quantum particle in a quenched random mean-zero magnetic field. Through a combination of numerical and analytic techniques we argue that both systems have extended eigenstates at a special point in the spectrum, $E_c$, where a sublattice decomposition obtains. In a neighborhood of this point, the Lyapunov exponents of the transfer-matrices acquire ratios characteristic of conformal invariance allowing an indirect determination of $1/r$ for the typical spatial decay of eigenstates.

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Jonathan Miller, Jane Wang. 1995-09-11. Passive scalars, random flux, and chiral phase fluids. https://doi.org/10.1103/physrevlett.76.1461

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