Asymptotic expansion of the annealed Green's function and its derivatives

Autoren: Keller, Matthias; Lemm, Marius (2025)

We consider random elliptic equations in dimension d3 at small ellipticity contrast. We derive the large-distance asymptotic expansion of the annealed Green's function up to order 4 in d=3 and up to order d+2 for d4. We also derive asymptotic expansions of its derivatives. The obtained precision lies far beyond what is established in prior results in stochastic homogenization theory. Our proof builds on a recent breakthrough in perturbative stochastic homogenization by Bourgain in a refined version shown by Kim and the second author, and on Fourier-analytic techniques of Uchiyama.

Seiten:
269–291
Band:
32

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