Lower Order Terms in Szego Theorems on Zoll Manifolds

Details Lower Order Terms in Szego Theorems on Zoll Manifolds Lower Order Terms in Szego Theorems on Zoll Manifolds

2002-12-19

arxiv.org/abs/math/0212273v1

Advances in differential equations and mathematical physics (Birmingham, AL, 2002), 99--113, Contemp. Math., 327, Amer. Math.

Mathematics

Functional Analysis

15 pages, short version, to appear in: Proc. of the UAB 2002 Int. Conf. on Diff. Eq. and Math. Phys., Contemp. Math., Amer. Ma

Scientific paper

The main motivation for this work was to find an explicit formula for a "Szego-regularized" determinant of a zeroth order pseudodifferential operator (PsDO) on a Zoll manifold. The idea of the Szego-regularization was suggested by V. Guillemin and K. Okikiolu. They have computed the second term in a Szego type expansion on a Zoll manifold of an arbitrary dimension. In the present work we compute the third asymptotic term in any dimension. In the case of dimension 2, our formula gives the above mentioned expression for the Szego-redularized determinant of a zeroth order PsDO. The proof uses a new combinatorial identity, which generalizes a formula due to G.A. Hunt and F.J. Dyson. This identity is related to the distribution of the maximum of a random walk with i.i.d. steps on the real line. The full version of this paper is also available, math.FA/0212275.

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