Universal $L^2$-torsion detects fibered 3-manifolds

It is well-known that the Alexander polynomial of a fibered knot must be monic. But in general the converse is not true. In this talk, we introduce the universal $L^2$-torsion of a 3-manifold, an invariant defined in analogy with the classical torsion, but using tools from $L^2$-theory. We will show that this invariant detects fibered 3-manifolds. Moreover, we extend the definition of the universal $L^2$-torsion to taut sutured 3-manifolds and show that it detects product sutured manifolds.

The talk will be streamed through "VooV": https://voovmeeting.com/r/374-057-208.
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