Periodic Riemannian manifold with preassigned gaps in spectrum of Laplace-Beltrami operator

Abstract

It is known (E.L. Green (1997), O. Post (2003)) that for an arbitrary $m\in \mathbb{N}$ one can construct a periodic non-compact Riemannian manifold $M$ with at least $m$ gaps in the spectrum of the corresponding Laplace-Beltrami operator $-{\Delta }_M$. In this work we want not only to produce a new type of periodic manifolds with spectral gaps but also to control the edges of these gaps. The main result of the paper is as follows: for arbitrary pairwise disjoint intervals $(\a_j,\b_j)\subset[0,\infty)$, $j=1,...,m$ ($m\in \mathbb{N}$), for an arbitrarily small $\delta >0$ and for an arbitrarily large $L>0$ we construct a periodic non-compact Riemannian manifold $M$ with at least $m$ gaps in the spectrum of the operator $-{\Delta }_M$, moreover the edges of the first $m$ gaps belong to $\delta$-neighbourhoods of the edges of the intervals $(\a_j,\b_j)$, while the remaining gaps (if any) are located outside the interval $[0,L]$.

30 pages, 2 Figures; Journal of Differential Equations (2012)

Cited by in corpus (2)

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