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Spectrum bottom and largest vacuity
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  • Published: May 1999

Spectrum bottom and largest vacuity

  • V.V. Yurinsky1 

Probability Theory and Related Fields volume 114, pages 151–175 (1999)Cite this article

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Abstract

The paper considers a scalar second-order elliptic operator

with a non-negative random potential term V(x) = ∑ X ∈? W(x−X) ≥ 0 corresponding to a Poisson cloud ? = {X} of “soft obstacles.” The operator acts on functions vanishing outside a large cubic open “box”rQ 0 = (−½r, ½r)d⊂ℝd, d≥ 2. The paper develops a method of estimating from below the spectrum bottom of the operator through the volume of the largest connected set that can be made of smaller “blocks” containing relatively few obstacles. In the case of constant coefficients, the principal eigenvalue λ?, V (r?) of (−? + V) in r? 0 is shown to satisfy, with high probability, the estimate

where λ?,* is the infimum of principal value of operator with zero potential term V≡ 0 under the Dirichlet condition on the boundary of a regular set of volume not exceeding one.

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Authors and Affiliations

  1. Departamento de Matemática/Informática, Universidade da Beira Interior, Convento de Santo António, 6200 Covilhã, Portugal. e-mail: yurinsky@ubi.pt, , , , , , PT

    V.V. Yurinsky

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  1. V.V. Yurinsky
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Received: 9 December 1997 / Revised version: 24 July 1998

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Yurinsky, V. Spectrum bottom and largest vacuity. Probab Theory Relat Fields 114, 151–175 (1999). https://doi.org/10.1007/s440-1999-8035-2

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  • Issue Date: May 1999

  • DOI: https://doi.org/10.1007/s440-1999-8035-2

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  • Mathematics Subject Classification (1991): 60K40, 35P15, 82D30
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