Correlations for pairs of periodic trajectories for open billiards

Vesselin Petkov (1) , Luchezar Stoyanov (2)

1 IMB - Institut de Mathématiques de Bordeaux
2 School of Mathematics and Statistics [Crawley, Perth]

In this paper we prove two asymptotic estimates for pairs of closed trajectories for open billiards similar to those established by Pollicott and Sharp for closed geodesics on negatively curved compact surfaces. The first of these estimates holds for general open billiards in any dimension. The more intricate second estimate is established for open billiards satisfying the so called Dolgopyat type estimates. This class of billiards includes all open billiards in the plane and open billiards in $\R^N, N \geq 3$ satisfying some additional conditions.

Domaines: Systèmes dynamiques [math.DS]; Equations aux dérivées partielles [math.AP]

Vesselin Petkov, Luchezar Stoyanov. Correlations for pairs of periodic trajectories for open billiards. Nonlinearity, 2009, 22, pp.2657-2679. ⟨hal-00392274v3⟩