Truncated Wiener-Hopf operators with Fisher Hartwig singularities

Details Truncated Wiener-Hopf operators with Fisher Hartwig singularities Truncated Wiener-Hopf operators with Fisher Hartwig singularities

2008-05-26

arxiv.org/abs/0805.3902v2

Mathematics

Functional Analysis

68 pages (V2, several pages added, more details in certain proofs)

Scientific paper

We derive the asymptotic behavior of determinants of truncated Wiener-Hopf operators generated by symbols having Fisher-Hartwig singularities. This task is achieved thanks to an asymptotic resolution of the Riemann-Hilbert problem associated to some generalized sine kernel. As a byproduct, we give yet another derivation of the asymptotic behavior of Toeplitz determinants having Fisher-Hartwig singularities. The Riemann-Hilbert problem approach to these asymptotics yields a systematic although quickly cumbersome way to compute their sub-leading asymptotics.

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