Poincaré Inequalities on Carnot Groups and Spectral Gap of Schrödinger Operators
Journal of Lie Theory, Tome 35 (2025) no. 3, pp. 629-650

Voir la notice de l'article provenant de la source Heldermann Verlag

We give a sufficient condition under which the global Poincaré inequality on Carnot groups holds true for a large family of probability measures absolutely continuous with respect to the Lebesgue measure. Additionally, we show that the global Poincaré inequality holds true on any Carnot group for a certain choice of a probability measure adapted to the structure of each Carnot group, and whose formula is explicitly given. Consequently, we extend the results of a previous work by the authors [q-Poincaré inequalities on Carnot groups with a filiform Lie algebra, Potential Analysis 60/3 (2024) 1067--1092] targeted on filiform Carnot groups to any Carnot group. As a result, the Schrödinger operators associated with the density of the considered probability measure have a spectral gap.
Classification : 35R03, 35A23, 26D10
Mots-clés : Poincaré inequalities, Carnot groups, sub-gradient, spectral gap

Marianna Chatzakou  1   ; Serena Federico  2   ; Boguslaw Zegarlinski  3

1 Department of Mathematics, Ghent University, Belgium
2 Department of Mathematics, University of Bologna, Italy
3 Institut de Mathématiques, UMR5219, CNRS, Université de Toulouse, France
Marianna Chatzakou; Serena Federico; Boguslaw Zegarlinski. Poincaré Inequalities on Carnot Groups and Spectral Gap of Schrödinger Operators. Journal of Lie Theory, Tome 35 (2025) no. 3, pp. 629-650. http://geodesic.mathdoc.fr/item/JOLT_2025_35_3_a9/
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     author = {Marianna Chatzakou and Serena Federico and Boguslaw Zegarlinski},
     title = {Poincar\'e {Inequalities} on {Carnot} {Groups} and {Spectral} {Gap} of {Schr\"odinger} {Operators}},
     journal = {Journal of Lie Theory},
     pages = {629--650},
     year = {2025},
     volume = {35},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2025_35_3_a9/}
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