Quantum Modular $\widehat Z{}^G$-Invariants

Fuente: arXiv
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Autori principali: Cheng, Miranda C. N., Coman, Ioana, Passaro, Davide, Sgroi, Gabriele
Natura: Preprint
Pubblicazione: 2023
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author Cheng, Miranda C. N.
Coman, Ioana
Passaro, Davide
Sgroi, Gabriele
author_facet Cheng, Miranda C. N.
Coman, Ioana
Passaro, Davide
Sgroi, Gabriele
contents We study the quantum modular properties of $\widehat Z{}^G$-invariants of closed three-manifolds. Higher depth quantum modular forms are expected to play a central role for general three-manifolds and gauge groups $G$. In particular, we conjecture that for plumbed three-manifolds whose plumbing graphs have $n$ junction nodes with definite signature and for rank $r$ gauge group $G$, that $\widehat Z{}^G$ is related to a quantum modular form of depth $nr$. We prove this for $G={\rm SU}(3)$ and for an infinite class of three-manifolds (weakly negative Seifert with three exceptional fibers). We also investigate the relation between the quantum modularity of $\widehat Z{}^G$-invariants of the same three-manifold with different gauge group $G$. We conjecture a recursive relation among the iterated Eichler integrals relevant for $\widehat Z{}^G$ with $G={\rm SU}(2)$ and ${\rm SU}(3)$, for negative Seifert manifolds with three exceptional fibers. This is reminiscent of the recursive structure among mock modular forms playing the role of Vafa-Witten invariants for ${\rm SU}(N)$. We prove the conjecture when the three-manifold is moreover an integral homological sphere.
format Preprint
id arxiv_https___arxiv_org_abs_2304_03934
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Quantum Modular $\widehat Z{}^G$-Invariants
Cheng, Miranda C. N.
Coman, Ioana
Passaro, Davide
Sgroi, Gabriele
High Energy Physics - Theory
Mathematical Physics
Number Theory
We study the quantum modular properties of $\widehat Z{}^G$-invariants of closed three-manifolds. Higher depth quantum modular forms are expected to play a central role for general three-manifolds and gauge groups $G$. In particular, we conjecture that for plumbed three-manifolds whose plumbing graphs have $n$ junction nodes with definite signature and for rank $r$ gauge group $G$, that $\widehat Z{}^G$ is related to a quantum modular form of depth $nr$. We prove this for $G={\rm SU}(3)$ and for an infinite class of three-manifolds (weakly negative Seifert with three exceptional fibers). We also investigate the relation between the quantum modularity of $\widehat Z{}^G$-invariants of the same three-manifold with different gauge group $G$. We conjecture a recursive relation among the iterated Eichler integrals relevant for $\widehat Z{}^G$ with $G={\rm SU}(2)$ and ${\rm SU}(3)$, for negative Seifert manifolds with three exceptional fibers. This is reminiscent of the recursive structure among mock modular forms playing the role of Vafa-Witten invariants for ${\rm SU}(N)$. We prove the conjecture when the three-manifold is moreover an integral homological sphere.
title Quantum Modular $\widehat Z{}^G$-Invariants
topic High Energy Physics - Theory
Mathematical Physics
Number Theory
url https://arxiv.org/abs/2304.03934