Author

Thijs Laarhoven

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Preprint Sep 2026

Spherical statistics and phase transitions in high-dimensional lattices

We study the spherical statistics of all the points in a thin shell of a high-dimensional random lattice. The exact relations between lattice points make it unclear when predictions based only on spherical geometry should hold. We answer this question for several statistics, including the number of shell points, the ba...

Thijs Laarhoven · 0 citations

Preprint Sep 2026

A lattice family with kissing numbers $\tau(\mathcal{L}_n) \ge e^{2 \sqrt{n}}$

For all prime powers $q\geq5$, we construct lattices $\mathcal{L}_q\subseteq\mathbb{Z}^q$ with kissing numbers \[ \tau(\mathcal{L}_q)\geq \left(\frac{1}{2\pi e^2}+o(1)\right)\sqrt{q}\,e^{2\sqrt{q}}. \] The same asymptotic bound holds on a set of integer dimensions of natural density $1$, and in every sufficiently large...

Thijs Laarhoven, S. Kominers · 0 citations

Preprint Sep 2026

A Note on Sphere Packing Bounds for Tuple Lattice Sieving

A finite set of unit vectors is $k$-irreducible if every signed sum of between two and $k$ distinct elements has norm greater than one. Let $\mathcal{R}_k$ be the maximal asymptotic rate of such sets, and let $\kappa(\alpha)$ be the maximal asymptotic rate of spherical codes with pairwise inner products at most $\alpha...

Thijs Laarhoven · 0 citations