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arXiv · hep-th/9405012

Eta-Invariants and Determinant Lines

Xianzhe Dai·Daniel S. Freed
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Abstract

We study eta-invariants on odd dimensional manifolds with boundary. The dependence on boundary conditions is best summarized by viewing the (exponentiated) eta-invariant as an element of the (inverse) determinant line of the boundary. We prove a gluing law and a variation formula for this invariant. This yields a new, simpler proof of the holonomy formula for the determinant line bundle of a family of Dirac operators, also known as the ``global anomaly'' formula. This paper is written using AMSTeX 2.1, which can be obtained via ftp from the American Mathematical Society (instructions included). A postscript file with figures was submitted separately in uuencoded tar-compressed format.

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Xianzhe Dai, Daniel S. Freed. 1994-06-08. Eta-Invariants and Determinant Lines. https://doi.org/10.1063/1.530747

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