This paper is inspired by Richards' work on large gaps between sums of two
squares [10]. It is demonstrated in [10] that there exist arbitrarily large
values of λ and μ, where μ≥Clogλ, such that
intervals [λ,λ+μ] do not contain any sums of two squares.
Geometrically, these gaps between sums of two squares correspond to annuli in
R2 that do not contain any integer lattice points.
The primary objective of this paper is to investigate the sparse distribution
of integer lattice points within annular regions in R2.
Specifically, we establish the existence of annuli {x∈R2:λ≤∣x∣2≤λ+κ} with arbitrarily large values of λ
and κ, where κ≥Cλs with 0<s<41,
satisfying that any two integer lattice points within any one of these annuli
must be sufficiently far apart. Furthermore, we extend our analysis to include
the sparse distribution of lattice points in spherical shells in R3.Comment: 13 page