Unweighted Donaldson-Thomas theory of the banana 3-fold with section classes
Abstract
We further the study of the Donaldson-Thomas theory of the banana threefolds which were recently discovered and studied in [Bryan'19]. These are smooth proper Calabi-Yau threefolds which are fibred by Abelian surfaces such that the singular locus of a singular fibre is a non-normal toric curve known as a "banana configuration". In [Bryan'19] the Donaldson-Thomas partition function for the rank 3 sub-lattice generated by the banana configurations is calculated. In this article we provide calculations with a view towards the rank 4 sub-lattice generated by a section and the banana configurations. We relate the findings to the Pandharipande-Thomas theory for a rational elliptic surface and present new Gopakumar-Vafa invariants for the banana threefold.
Keywords
Cite
@article{arxiv.1907.01054,
title = {Unweighted Donaldson-Thomas theory of the banana 3-fold with section classes},
author = {Oliver Leigh},
journal= {arXiv preprint arXiv:1907.01054},
year = {2020}
}