4.3 Article

Generating functions for intersection products of divisors in resolved F-theory models

Journal

NUCLEAR PHYSICS B
Volume 991, Issue -, Pages -

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ELSEVIER
DOI: 10.1016/j.nuclphysb.2023.116177

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Building on previous work, this paper presents an efficient algorithm for computing topological intersection numbers of divisors in a broad class of elliptic fibrations. The algorithm utilizes a symbolic computing tool and organizes the intersection products of divisors into a succinct analytic generating function. The implementation of the algorithm shows a significant reduction in computation time compared to previous methods.
Building on the approach of 1703 .00905, we present an efficient algorithm for computing topological intersection numbers of divisors in a broad class of elliptic fibrations with the aid of a symbolic computing tool. A key part of our strategy is organizing the intersection products of divisors into a succinct analytic generating function, namely the exponential of the Kehler class. We use the methods of 1703 .00905 to compute the pushforward of this function to the base of the elliptic fibration. We implement our algorithm in an accompanying Mathematica package IntersectionNumbers.m that computes generating functions of intersection products for resolutions of F-theory Tate models defined over smooth base of arbitrary complex dimension. Our algorithm appears to offer a significant reduction in computation time needed to compute intersection numbers as compared to previously explored implementations of the methods in 1703 .00905; as an illustration, we explicitly compute the generating functions for all F-theory Tate models with simple classical groups of rank up to twenty and highlight the growth of the computation time with the rank of the group. & COPY; 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.

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