Abstract
Using geometric methods, we improve on the function field version of the Burgess bound and show that, when restricted to certain special subspaces, the Möbius function over $\mathbb{F}_q[T]$ can be mimicked by Dirichlet characters. Combining these, we obtain a level of distribution close to $1$ for the Möbius function in arithmetic progressions and resolve Chowla's $k$-point correlation conjecture with large uniformity in the shifts. Using a function field variant of a result by Fouvry-Michel on exponential sums involving the Möbius function, we obtain a level of distribution beyond $1/2$ for irreducible polynomials, and establish the twin prime conjecture in a quantitative form. All these results hold for finite fields satisfying a simple condition.
Citation
Will Sawin. Mark Shusterman. "On the Chowla and twin primes conjectures over $\mathbb{F}_q[T]$." Ann. of Math. (2) 196 (2) 457 - 506, September 2022. https://doi.org/10.4007/annals.2022.196.2.1
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