K-reduced partition function and empirical measure conjecture

Let (X,Δ)(X,\Delta) be a log Fano manifold admitting a Kähler–Einstein metric. Let ZmNZ_{\boldsymbol{m}_{N}} be the K-reduced partition function, let M\mathcal{M} be the Mabuchi functional, and let δN\delta_N be the empirical measure under the K-reduced probability measure μmN(N)\mu_{\boldsymbol{m}_N}^{(N)}. K-reduced partition function conjecture.

limNN1logZmN=infM.-\lim_{N\to\infty}N^{-1}\log Z_{\boldsymbol{m}_{N}}=\inf\mathcal{M}.

Consequently, ZmN<Z_{\boldsymbol{m}_{N}}<\infty for sufficiently large NN and

limNδN=μKE\lim_{N\to\infty}\delta_N=\mu_{\mathrm{KE}}

in probability, where μKEP(X)0\mu_{\mathrm{KE}}\in\mathcal{P}(X)_0 is the normalized volume form of the unique Kähler–Einstein metric with vanishing moment. This predicts both the asymptotic free energy and convergence of the conditioned point process; the source provides no resolution.

Sources & referencesView supporting material

Primary source

Rolf Andreasson, Robert J. Berman and Ludvig Svensson, “Gibbs polystability of Fano manifolds, stability thresholds and symmetry breaking”, arXiv:2511.16173 (2026).

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