Acta mathematica scientia,Series B ›› 2025, Vol. 45 ›› Issue (2): 493-513.doi: 10.1007/s10473-025-0212-9

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FISHER INFORMATION AMONG β-ENSEMBLES

Yutao Ma   

  1. School of Mathematical Sciences & Laboratory of Mathematics and Complex Systems of Ministry of Education, Beijing Normal University, Beijing 100875, China
  • Received:2023-08-01 Revised:2024-04-23 Online:2025-03-25 Published:2025-05-08
  • About author:Yutao Ma, E-mail: mayt@bnu.edu.cn
  • Supported by:
    This research was supported by the NSFC (12171038) and 985 Projects.

Abstract: In this paper, we consider the Fisher informations among three classical type β-ensembles when β>0 scales with n satisfying limnβn=. We offer the exact order of the corresponding two Fisher informations, which indicates that the β-Laguerre ensembles do not satisfy the logarithmic Sobolev inequality. We also give some limit theorems on the extremals of β-Jacobi ensembles for β>0 fixed.

Key words: β-Hermite ensemble, β-Laguerre ensemble, β-Jacobi ensemble, Fisher information, Tracy-Widom law

CLC Number: 

  • 15B52
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