The triangular lattice minimizer conjecture for logarithmic lattice energies

Let s>2s>2. For a two-dimensional lattice LL of unit density, define

Fs(L):=\sidesetpLslogp+1ps.\mathcal{F}_s(L):= -\sideset{}{'} \sum_{p\in L} \frac{s\log |p|+1}{|p|^s}.

Triangular lattice minimizer conjecture. For every s>2s>2, the triangular lattice A2\mathsf{A}_2 is the unique minimizer of Fs\mathcal{F}_s among all two-dimensional lattices of unit density.

This conjecture would imply the paper's optimality results for the triangular lattice for every pair of Lennard–Jones exponents 2<β<α2<\beta<\alpha, rather than only for fixed exponents. The source presents it as expected to hold for all s>2s>2 and does not report a proof or disproof.

Sources & referencesView supporting material

Primary source

Laurent Bétermin, “Optimality of the triangular lattice for Lennard-Jones type lattice energies: a computer-assisted method”, arXiv:2104.09795 (2023).

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