arXiv:2302.14839v2

Asymptotic behavior of the pressure function for Hölder potentials

Tamara Kucherenko, Anthony Quas

math.DS37D3537B1037A60

Abstract

We study the behavior of the pressure function for Hölder continuous potentials on mixing subshifts of finite type. The classical theory of thermodynamic formalism shows that such pressure functions are convex, analytic and have slant asymptotes. We provide a sharp exponential lower bound on how fast the pressure function approaches its asymptotes. As a counterpart, we also show that there is no corresponding upper bound by exhibiting systems for which the convergence is arbitrarily slow. However, we prove that the exponential upper bound still holds for a generic Hölder potential. In addition, we determine that the pressure function satisfies a coarse uniform convexity property. Asymptotic bounds and quantitative convexity estimates are the first additional general properties of the pressure function obtained in the settings of Bowen and Ruelle since their groundbreaking work more than 40 years ago.

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Audited against arXiv v2

Not a correctness certificate. A “Correct” result may include yellow typos or minor formal corrections that do not affect substantive soundness. It means this audit found no unresolved substantive error under the stated criteria; it does not replace expert scrutiny or formal verification.

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Detailed mathematical audit

Generated August 18, 2026
01Statements3 reported findingsCorrect

The four principal pressure-asymptotic theorems are correct as stated. They distinguish a universal exponential lower separation, arbitrarily slow examples, a dense open exponential upper regime, and a quantitative strict-convexity bound.

Theorems 1 and 4Correct

The exponential separation and strict-convexity estimates follow from the orbit-splicing construction

Pages 2–5 and Sections 3–4 · Theorems 1 and 4 · arXiv:2302.14839v2

The specification construction splices long orbit blocks from competing invariant measures while controlling both the entropy gain and the Hölder-potential transition cost. Optimizing the block proportions gives the stated exponentially small but positive pressure gap and the corresponding secant-defect estimate. The non-cohomology hypothesis excludes the sole affine case, and all constants are allowed the dependencies used in the proof.

Theorem 2Correct

Pressure can approach its asymptote arbitrarily slowly

Pages 4–5 and 27–32 · Section 5 · arXiv:2302.14839v2

The nested family of mixing subshifts has entropies tending to zero at a prescribed scale, while the Hölder potential assigns successively smaller penalties away from those subshifts. The variational principle gives matching lower and upper pressure bounds along the chosen temperature intervals, so the gap can dominate the prescribed function infinitely often. The construction retains one maximizing ground state and a finite Hölder norm.

Theorem 3Correct

The exponential upper regime is open and dense

Pages 6 and 32–36 · Section 6 · arXiv:2302.14839v2

The cited density theorem permits an arbitrarily small Hölder perturbation whose unique maximizing measure is supported on a periodic orbit, and the strict maximizing inequality persists on a neighborhood of that potential. After the cohomological normalization, the potential decreases by a fixed amount proportional to distance from the orbit. The Gibbs/transfer-operator estimate then bounds every non-ground-state contribution exponentially, giving the claimed local upper bound without covering potentials that are cohomologous to constants.

02Proofs1 reported findingCorrect

The symbolic-dynamical constructions, entropy estimates, and convex-analytic deductions are complete and match the hypotheses of the four main theorems.

Proofs of Theorems 1–4Correct and complete

The pressure estimates track both entropy and potential errors at the required scale

Sections 3–7 · arXiv:2302.14839v2

The lower-bound proofs construct admissible invariant measures rather than merely formal convex combinations, and the transition errors are summable by Hölder variation. The slow-example induction retains the announced asymptote, while the generic upper bound is applied only after the maximizing periodic orbit is fixed. No circular use of the desired asymptotic or missing parameter regime was found.

03Novelty0 reported findingsNo non-novelty findings

No non-novelty findings.

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Paper
arXiv:2302.14839v2
Authors listed
Tamara Kucherenko, Anthony Quas
Audit date
August 18, 2026
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