English

Tropical correspondence for smooth del Pezzo log Calabi-Yau pairs

Algebraic Geometry 2022-05-06 v4

Abstract

Consider a log Calabi-Yau pair (X,D)(X,D) consisting of a smooth del Pezzo surface XX of degree 3\geq 3 and a smooth anticanonical divisor DD. We prove a correspondence between genus zero logarithmic Gromov-Witten invariants of XX intersecting DD in a single point with maximal tangency and the consistent wall structure appearing in the dual intersection complex of (X,D)(X,D) from the Gross-Siebert reconstruction algorithm. More precisely, the logarithm of the product of functions attached to unbounded walls in the consistent wall structure gives a generating function for these invariants.

Keywords

Cite

@article{arxiv.2005.14018,
  title  = {Tropical correspondence for smooth del Pezzo log Calabi-Yau pairs},
  author = {Tim Graefnitz},
  journal= {arXiv preprint arXiv:2005.14018},
  year   = {2022}
}

Comments

74 pages; v4: added {\S}7 on higher genus; a shortened version of this paper will appear in Journal of Algebraic Geometry