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Smooth numbers in arithmetic progressions to large moduli (2304.11696v3)
Published 23 Apr 2023 in math.NT
Abstract: We show that smooth numbers are equidistributed in arithmetic progressions to moduli of size $x{66/107-o(1)}$. This overcomes a longstanding barrier of $x{3/5-o(1)}$ present in previous works of Bombieri-Friedlander-Iwaniec, Fouvry-Tenenbaum, Drappeau, and Maynard. We build on Drappeau's variation of the dispersion method and on exponential sum manipulations of Maynard, ultimately relying on optimized Deshouillers-Iwaniec type estimates for sums of Kloosterman sums.
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