JournalsjncgVol. 11, No. 3pp. 1115–1139

Motivic Donaldson–Thomas invariants of some quantized threefolds

  • Alberto Cazzaniga

    Stellenbosch University, South Africa
  • Andrew Morrison

    ETH Zürich, Switzerland
  • Brent Pym

    University of Edinburgh, UK
  • Balázs Szendrői

    University of Oxford, UK
Motivic Donaldson–Thomas invariants of some quantized threefolds cover
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Abstract

This paper is motivated by the question of howmotivic Donaldson–Thomas invariants behave in families. We compute the invariants for some simple families of noncommutative Calabi–Yau threefolds, defined by quivers with homogeneous potentials. These families give deformation quantizations of affine three-space, the resolved conifold, and the resolution of the transversal AnA_n-singularity. It turns out that their invariants are generically constant, but jump at special values of the deformation parameter, such as roots of unity. The corresponding generating series are written in closed form, as plethystic exponentials of simple rational functions. While our results are limited by the standard dimensional reduction techniques that we employ, they nevertheless allow us to conjecture formulae for more interesting cases, such as the elliptic Sklyanin algebras.

Cite this article

Alberto Cazzaniga, Andrew Morrison, Brent Pym, Balázs Szendrői, Motivic Donaldson–Thomas invariants of some quantized threefolds. J. Noncommut. Geom. 11 (2017), no. 3, pp. 1115–1139

DOI 10.4171/JNCG/11-3-10