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The zeta-determinant of the Dirichlet-to-Neumann operator of the Steklov Problem on forms

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arxiv 2404.14562 v1 pith:KJV33H6K submitted 2024-04-22 math.DG

classification math.DG
keywords boundarydirichlet-to-neumannformsoperatorzeta-determinantconditionsconformaldimension
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abstract

On a compact Riemannian manifold $M$ with boundary $Y$, we express the log of the zeta-determinant of the Dirichlet-to-Neumann operator acting on $q$-forms on $Y$ as the difference of the log of the zeta-determinant of the Laplacian on $q$-forms on $M$ with absolute boundary conditions and that of the Laplacian with Dirichlet boundary conditions with some additional terms which are expressed by curvature tensors. When the dimension of $M$ is $2$ or $3$, we compute these terms explicitly. We also discuss the value of the zeta function at zero associated to the Dirichlet-to-Neumann operator by using a conformal rescaling method. As an application, we recover the result of the conformal invariance obtained in C. Guillarmou and L. Guillop\'e, The determinant of the Dirichlet-to-Neumann map for surfaces with boundary, Int. Math. Res. Not. IMRN 2007, no. 22, Art. ID rnm099, when the dimension of $M$ is $2$.

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  1. Neumann scalar determinants on constant curvature disks

    hep-th 2025-07 conditional novelty 6.0 of 10

    Neumann determinants of the massive Laplacian on constant curvature disks are expressed as convergent infinite series, with exact special-mass reductions for m^2 = -η/L^2 q(q+1).

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