Cappell–Miller conjecture on torsion and Reidemeister torsion

Let (E,)(E,\nabla) be a flat vector bundle over a closed oriented odd-dimensional manifold MM. Let TT_\nabla denote its Cappell–Miller torsion, let EE^* be the dual bundle with dual connection \nabla^*, let D:Det(H(M,E))Det(H(M,E))D:\operatorname{Det}(H^\bullet(M,E))\to\operatorname{Det}(H^\bullet(M,E^*)) be the Farber–Turaev duality operator, and let ρR()\rho^{\operatorname{R}}(\nabla\oplus\nabla^*) be the Reidemeister torsion of EEE\oplus E^*. Let zNz\in\mathbb{N} be the integer defined in formula (6.5) of Farber–Turaev.

Cappell–Miller conjecture. The Cappell–Miller torsion satisfies

(1D)T=(1)zρR().(1\otimes D)T_\nabla=(-1)^z\rho^{\operatorname{R}}(\nabla\oplus\nabla^*).

The statement relates the analytic Cappell–Miller torsion to the Reidemeister torsion of the self-dual bundle EEE\oplus E^*. The source presents it as equivalent to a reformulation of the Burghelea–Haller conjecture; its resolution is not specified in the supplied text.

Sources & referencesView supporting material

Primary source

Maxim Braverman and Thomas Kappeler, “A Canonical Quadratic Form on the Determinant Line of a Flat Vector Bundle”, arXiv:0710.1232 (2007).

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