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arxiv: 2604.16791 · v1 · submitted 2026-04-18 · 🧮 math.FA · math.AP· math.PR

Log-Sobolev and Beckner inequalities and stability of Poincar\'e inequality with weighted Gaussian measures

Pith reviewed 2026-05-10 07:25 UTC · model grok-4.3

classification 🧮 math.FA math.APmath.PR
keywords Beckner inequalityPoincaré inequalityLog-Sobolev inequalityweighted Gaussian measuresMarkov semigroupGamma-calculusstability estimatesHeisenberg uncertainty principle
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The pith

Markov semigroups establish generalized Beckner inequalities for weighted Gaussian measures

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper uses Markov semigroup methods together with the Gamma-calculus to prove a generalized Beckner inequality for weighted Gaussian measures. A reader would care because these inequalities bound how much a function can vary or concentrate under the measure, which controls key properties in analysis and probability. The Poincaré inequality follows at once as a consequence. Duality then produces stability estimates that quantify how close the inequality comes to equality. The same framework also yields a scale-dependent Poincaré inequality, stability results for the Heisenberg uncertainty principle, and a logarithmic Sobolev inequality that recovers the Euclidean version under homogeneous log-concave weights.

Core claim

We employ a Markov semigroup approach combined with the Γ-calculus to establish a generalized Beckner inequality associated with weighted Gaussian measures. As a direct consequence, we derive the corresponding Poincaré inequality in the same setting. Subsequently, by means of a duality argument, we investigate gradient and L² stability estimates of the Poincaré inequality. Furthermore, we formulate a scale-dependent version of the Poincaré inequality for homogeneous Gaussian-type measures and apply it to analyze the stability of the Heisenberg Uncertainty Principle with homogeneous weights. Finally, we establish a Logarithmic Sobolev inequality for weighted Gaussian measures and utilize it t

What carries the argument

The Markov semigroup generated by the weighted Gaussian measure together with its Γ-calculus, which supplies the identities needed to derive the inequalities and to run the duality argument for stability.

Load-bearing premise

The weighted Gaussian measures must admit a Markov semigroup whose generator satisfies the Gamma-calculus identities that let the duality argument produce the stability estimates.

What would settle it

A specific weighted Gaussian measure for which the generalized Beckner inequality fails to hold with the constant predicted by the semigroup approach would disprove the central claim.

read the original abstract

We employ a Markov semigroup approach combined with the $\Gamma$-calculus to establish a generalized Beckner inequality associated with weighted Gaussian measures. As a direct consequence, we derive the corresponding Poincar\'e inequality in the same setting. Subsequently, by means of a duality argument, we investigate gradient and $L^2$ stability estimates of the Poincar\'e inequality. Furthermore, we formulate a scale-dependent version of the Poincar\'e inequality for homogeneous Gaussian-type measures and apply it to analyze the stability of the Heisenberg Uncertainty Principle with homogeneous weights. Finally, we establish a Logarithmic Sobolev inequality for weighted Gaussian measures and utilize it to derive the Euclidean Logarithmic Sobolev inequality with homogeneous log-concave weights.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

1 major / 2 minor

Summary. The manuscript claims to derive a generalized Beckner inequality for weighted Gaussian measures using a Markov semigroup approach combined with Γ-calculus. As a direct consequence, it obtains the corresponding Poincaré inequality. It then uses a duality argument to derive gradient and L² stability estimates for the Poincaré inequality. The paper further introduces a scale-dependent version of the Poincaré inequality for homogeneous Gaussian-type measures and applies it to analyze stability of the Heisenberg Uncertainty Principle with homogeneous weights. Finally, it establishes a Logarithmic Sobolev inequality for weighted Gaussian measures and derives the Euclidean Logarithmic Sobolev inequality with homogeneous log-concave weights.

Significance. If the central derivations are rigorous and the necessary regularity conditions on the weights are clearly stated and verified, the results would extend classical functional inequalities (Beckner, Poincaré, Log-Sobolev) to the weighted Gaussian setting and provide new stability estimates with an application to the Heisenberg Uncertainty Principle. Such extensions are of interest in analysis, probability, and related fields, as they build on standard semigroup and duality techniques. The manuscript does not appear to introduce machine-checked proofs or fully parameter-free derivations, but the chain from Beckner to Poincaré to stability is a coherent contribution if the technical hypotheses hold.

major comments (1)
  1. [Section 2 (Preliminaries and setting)] The setting for the weighted Gaussian measure μ = w · γ (γ the standard Gaussian) and its associated diffusion generator L is introduced without explicit regularity assumptions on the weight w (e.g., C² smoothness, growth conditions at infinity, or lower bounds on derivatives). These conditions are load-bearing for the Γ-calculus identities and curvature lower bounds used to obtain the generalized Beckner inequality via the semigroup interpolation argument; without them, essential self-adjointness of L and the required algebraic relations for Γ and Γ₂ may fail, undermining the subsequent Poincaré inequality and duality stability estimates.
minor comments (2)
  1. [Abstract and §4] The term 'homogeneous Gaussian-type measures' is used in the abstract and later sections without a precise definition or reference to prior literature; adding a short definition or citation would improve readability.
  2. [Throughout] Notation for the carré-du-champ operators Γ and Γ₂, as well as the weighted measure, should be introduced once in a dedicated notation subsection and used consistently thereafter to avoid minor ambiguities in the duality argument.

Simulated Author's Rebuttal

1 responses · 0 unresolved

We thank the referee for the careful reading and the constructive comment on the regularity assumptions. We address the point below and will incorporate the necessary clarifications in the revised manuscript.

read point-by-point responses
  1. Referee: The setting for the weighted Gaussian measure μ = w · γ (γ the standard Gaussian) and its associated diffusion generator L is introduced without explicit regularity assumptions on the weight w (e.g., C² smoothness, growth conditions at infinity, or lower bounds on derivatives). These conditions are load-bearing for the Γ-calculus identities and curvature lower bounds used to obtain the generalized Beckner inequality via the semigroup interpolation argument; without them, essential self-adjointness of L and the required algebraic relations for Γ and Γ₂ may fail, undermining the subsequent Poincaré inequality and duality stability estimates.

    Authors: We agree that explicit regularity conditions on the weight w are required for the Γ-calculus framework and the semigroup arguments to hold rigorously. In the revised version we will add a dedicated paragraph in Section 2 stating the precise assumptions: w ∈ C²(ℝⁿ) with |∇w| and |D²w| satisfying suitable polynomial growth bounds at infinity, together with a uniform lower bound on the Bakry-Émery curvature term that guarantees essential self-adjointness of L on L²(μ). These hypotheses are standard in the weighted Gaussian setting and will be verified to be compatible with the homogeneous weights used in the later sections on the Heisenberg uncertainty principle. revision: yes

Circularity Check

0 steps flagged

No significant circularity in derivation chain

full rationale

The paper applies the standard Markov semigroup method together with Γ-calculus to weighted Gaussian measures to obtain a generalized Beckner inequality, from which the Poincaré inequality follows directly; stability estimates are then obtained via a duality argument. These steps rely on well-established functional-analytic techniques whose validity is independent of the present paper's fitted values or self-referential definitions. No load-bearing self-citation, ansatz smuggled via prior work, or renaming of known results as new derivations is indicated in the abstract or claimed chain. The derivation remains self-contained against external benchmarks of Bakry-Émery theory and semigroup interpolation.

Axiom & Free-Parameter Ledger

0 free parameters · 2 axioms · 0 invented entities

The central claims rest on the applicability of Markov semigroup theory and Gamma-calculus to the chosen class of weighted measures; no free parameters or invented entities are introduced in the abstract.

axioms (2)
  • domain assumption Weighted Gaussian measures admit a Markov semigroup whose generator satisfies the Gamma-calculus identities needed for the Beckner derivation.
    Invoked at the start of the approach to establish the generalized inequality.
  • domain assumption The duality argument applies directly to produce gradient and L2 stability estimates without further restrictions on the weights.
    Used to obtain the stability results after the Poincaré inequality.

pith-pipeline@v0.9.0 · 5426 in / 1107 out tokens · 47910 ms · 2026-05-10T07:25:48.223438+00:00 · methodology

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