On the twisted Alexander polynomial for metabelian representations into SL(2, C)
arXiv:1101.3989
Abstract
We observe the twisted Alexander polynomial for metabelian representations of knot groups into SL(2,C) and study relations to the characterizations of metabelian representations in the character varieties. We give a factorization of the twisted Alexander polynomial for irreducible metabelian representations with the adjoint action on sl(2,C), in which the Alexander polynomial and the twisted Alexander polynomial appear as factors. We also show several explicit examples.
13 pages, 4 figures; V4:minor changes, to appear in Topology and its Applications