201. Nodal Statistics of Planar Random Waves
- Author
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Giovanni Peccati, Maurizia Rossi, Ivan Nourdin, Nourdin, I, Peccati, G, and Rossi, M
- Subjects
Gaussian ,FOS: Physical sciences ,01 natural sciences ,symbols.namesake ,Nodal sets ,Pullback ,0103 physical sciences ,Statistics ,FOS: Mathematics ,Limit (mathematics) ,0101 mathematics ,Mathematical Physics ,Eigenvalues and eigenvectors ,Central limit theorem ,Physics ,Laplace transform ,Plane (geometry) ,Probability (math.PR) ,010102 general mathematics ,Statistical and Nonlinear Physics ,Mathematical Physics (math-ph) ,symbols ,Mathematics [G03] [Physical, chemical, mathematical & earth Sciences] ,Mathématiques [G03] [Physique, chimie, mathématiques & sciences de la terre] ,010307 mathematical physics ,Complex number ,Mathematics - Probability - Abstract
We consider Berry's random planar wave model (1977) for a positive Laplace eigenvalue $E>0$, both in the real and complex case, and prove limit theorems for the nodal statistics associated with a smooth compact domain, in the high-energy limit ($E\to \infty$). Our main result is that both the nodal length (real case) and the number of nodal intersections (complex case) verify a Central Limit Theorem, which is in sharp contrast with the non-Gaussian behaviour observed for real and complex arithmetic random waves on the flat $2$-torus, see Marinucci et al. (2016) and Dalmao et al. (2016). Our findings can be naturally reformulated in terms of the nodal statistics of a single random wave restricted to a compact domain diverging to the whole plane. As such, they can be fruitfully combined with the recent results by Canzani and Hanin (2016), in order to show that, at any point of isotropic scaling and for energy levels diverging sufficently fast, the nodal length of any Gaussian pullback monochromatic wave verifies a central limit theorem with the same scaling as Berry's model. As a remarkable byproduct of our analysis, we rigorously confirm the asymptotic behaviour for the variances of the nodal length and of the number of nodal intersections of isotropic random waves, as derived in Berry (2002)., 51 pages
- Published
- 2019