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The necessity of conditions for graph quantum ergodicity and Cartesian products with an infinite graph.
- Source :
-
Comptes Rendus. Mathématique . 2022, Vol. 360, p399-408. 10p. - Publication Year :
- 2022
-
Abstract
- Anantharaman and Le Masson proved that any family of eigenbases of the adjacency operators of a family of graphs is quantum ergodic (a form of delocalization) assuming the graphs satisfy conditions of expansion and high girth. In this paper, we show that neither of these two conditions is sufficient by itself to necessitate quantum ergodicity. We also show that having conditions of expansion and a specific relaxation of the high girth constraint present in later papers on quantum ergodicity is not sufficient. We do so by proving new properties of the Cartesian product of two graphs where one is infinite. [ABSTRACT FROM AUTHOR]
- Subjects :
- *QUANTUM graph theory
Subjects
Details
- Language :
- English
- ISSN :
- 1631073X
- Volume :
- 360
- Database :
- Academic Search Index
- Journal :
- Comptes Rendus. Mathématique
- Publication Type :
- Academic Journal
- Accession number :
- 173500253
- Full Text :
- https://doi.org/10.5802/crmath.316