Grothendieck–Plancherel conjecture for the homogeneous limit shape

From papers

Let x,y0x,y\searrow 0 and let β=β(x)0\beta=\beta(x)\nearrow 0 satisfy β(x)x-\beta(x)\ll x. Let W(ux,y,β(x))\mathfrak{W}(u\mid x,y,\beta(x)) denote the Grothendieck limit shape, and let Ω(u)\Omega(u) be the Vershik–Kerov–Logan–Shepp shape. Grothendieck–Plancherel conjecture. The rescaled limit shape

1xyW(uxyx,y,β(x))\frac{1}{\sqrt{xy}}\mathfrak{W}(u\sqrt{xy}\mid x,y,\beta(x))

converges to Ω(u)\Omega(u). This is motivated by the fact that the bounding Schur-process limit shapes become close to the Plancherel limit shape in this regime; the conjecture is supported by numerical experiments, but no resolution is given here.

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Sources & referencesView supporting material

Primary source

Svetlana Gavrilova and Leonid Petrov, “Tilted biorthogonal ensembles, Grothendieck random partitions, and determinantal tests”, arXiv:2305.17747 (2024).

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