Motivic Donaldson-Thomas Invariants of Parabolic Higgs Bundles and Parabolic Connections on a Curve
arXiv:1910.12348 · doi:10.3842/SIGMA.2020.070
Abstract
Let be a smooth projective curve over a field of characteristic zero and let be a non-empty set of rational points of . We calculate the motivic classes of moduli stacks of semistable parabolic bundles with connections on and motivic classes of moduli stacks of semistable parabolic Higgs bundles on . As a by-product we give a criteria for non-emptiness of these moduli stacks, which can be viewed as a version of the Deligne-Simpson problem.