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arXiv · 2312.09882

Low degree motivic Donaldson-Thomas invariants of the three-dimensional projective space

Anna M. Viergever
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Abstract

Levine has constructed motivic analogues of virtual fundamental classes, living in cohomology of Witt sheaves. We use this to define motivic Donaldson-Thomas invariants $\tilde{I}_n$ for $\mathbb{P}^3$ over $\mathbb{R}$. We show that for $n$ odd, $\tilde{I}_n = 0$ and we compute $\tilde{I}_2 = 10, \tilde{I}_4 = 25$ and $\tilde{I}_6 = -50$. We then make a conjecture about the general case, which could be a motivic analogue of a classical theorem of Maulik-Nekrasov-Okounkov-Pandharipande. The results presented here also form a chapter in the authors thesis, which was submitted on May 30'th, 2023.

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BibTeXRIS

Anna M. Viergever. 2024-01-25. Low degree motivic Donaldson-Thomas invariants of the three-dimensional projective space. https://arxiv.org/abs/2312.09882

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