Tilt-stable log-Sobolev conjecture for log-concave measures

From papers

Let μ\mu be a log-concave probability measure on Rn\mathbb R^n. It is β\beta-tilt-stable if, for every hRnh\in\mathbb R^n, the covariance operator of the tilted measure τhμ\tau_h\mu is bounded by β2In\beta^2 I_n in operator norm, where τhμ\tau_h\mu is the normalized tilt of μ\mu by ehxe^{h\cdot x}. Tilt-stable log-Sobolev conjecture. If μ\mu is a β\beta-tilt-stable log-concave probability, then

ρLS(μ)β.\rho_{LS}(\mu)\lesssim\beta.

The source states this as a weaker consequence of the preceding log-Sobolev KLS conjecture, using that tilt-stability implies sub-Gaussianity up to a universal factor. Its general validity remains open.

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Sources & referencesView supporting material

Primary source

Pierre Bizeul, “On the Log-Sobolev Constant of Log-Concave Vectors”, arXiv:2306.12997 (2026).

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