Smooth Compactifications of the Abel-Jacobi Section
Algebraic Geometry
2023-01-24 v2
Abstract
For a small generic universal stability condition of degree and a vector of integers adding up to , the spaces resolving the Abel-Jacobi section to the compactified Jacobian Pic^\theta constructed in the work of Abreu-Pacini and Holmes-Molcho-Pandharipande-Pixton-Schmitt are observed to lie inside the space of Marcus and Wise, and their pullback to the rubber space of loc. cit to be smooth. This provides smooth and modular blowups of the moduli space of stable curves on which the logarithmic double ramification cycle can be calculated by several methods, old and novel.
Keywords
Cite
@article{arxiv.2212.14375,
title = {Smooth Compactifications of the Abel-Jacobi Section},
author = {Sam Molcho},
journal= {arXiv preprint arXiv:2212.14375},
year = {2023}
}
Comments
30 pages. Comments and suggestions welcome. v2: Fixed a broken reference, some minor rewording in the introduction