Dubois' Torsion, A-polynomial and Quantum Invariants

Details Dubois' Torsion, A-polynomial and Quantum Invariants Dubois' Torsion, A-polynomial and Quantum Invariants

2011-01-13

arxiv.org/abs/1101.2695v1

Mathematics

Geometric Topology

34 pages, 3 figures

Scientific paper

It is shown that for knots with a sufficiently regular character variety the Dubois' torsion detects the A-polynomial of the knot. A global formula for the integral of the Dubois torsion is given. The formula looks like the heat kernel regularization of the formula for the Witten-Reshetikhin-Turaev invariant of the double of the knot complement. The Dubois' torsion is recognized as the pushforward of a measure on the character variety of the double of the knot complement coming from the square root of Reidemeister torsion. This is used to motivate a conjecture about quantum invariants detecting the A-polynomial.

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