Tropicalization conjecture for non-Archimedean lattices

Let KK be the non-Archimedean field and let LKnL\subset K^n be a lattice. Write φL\varphi_L for its entropy polynomial, ΣL\Sigma_L for the associated polyhedral complex, and VL:=LOKKV_L:=L\otimes_{\mathcal O_K}K. For α>0\alpha>0, define

QL,α(x)=exp(αφL(x)),xRn.Q_{L,\alpha}(x)=\exp\big(-\alpha\varphi_L(x)\big),\qquad x\in\mathbb R^n.

Tropicalization conjecture. For every lattice LKnL\subset K^n, there exists αLR>0\alpha_L\in\mathbb R_{>0} such that, for every ααL\alpha\geq\alpha_L, QL,αQ_{L,\alpha} is the survival function of a probability measure on Rn\mathbb R^n, and this measure is supported on ΣL\Sigma_L. In particular, its projection to Rn/R1n\mathbb R^n/\mathbb R\bm{1}_n is a probability measure on trop(P(VL))\operatorname{trop}(\mathbb P(V_L)). This conjecture proposes a probabilistic realization of the tropicalization associated with a non-Archimedean lattice; the statement is presented as a motivation following the known supermodularity of entropy vectors of lattices.

Sources & referencesView supporting material

Primary source

Yassine El Maazouz, “How to Tropicalize a non-Archimedean Lattice”, arXiv:2512.12127 (2025).

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