Quantization of Axion-Gauge Couplings and Non-Invertible Higher Symmetries

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Main Authors: Choi, Yichul, Forslund, Matthew, Lam, Ho Tat, Shao, Shu-Heng
Format: Preprint
Published: 2023
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author Choi, Yichul
Forslund, Matthew
Lam, Ho Tat
Shao, Shu-Heng
author_facet Choi, Yichul
Forslund, Matthew
Lam, Ho Tat
Shao, Shu-Heng
contents We derive model-independent quantization conditions on the axion couplings (sometimes known as the anomaly coefficients) to the Standard Model gauge group $[SU(3)\times SU(2)\times U(1)_Y]/\mathbb{Z}_q$ with $q=1,2,3,6$. Using these quantization conditions, we prove that any QCD axion model to the right of the $E/N=8/3$ line on the $|g_{aγγ}|$-$m_a$ plot must necessarily face the axion domain wall problem in a post-inflationary scenario. We further demonstrate the higher-group and non-invertible global symmetries in the Standard Model coupled to a single axion. These generalized global symmetries lead to universal bounds on the axion string tension and the monopole mass. If the axion were discovered in the future, our quantization conditions could be used to constrain the global form of the Standard Model gauge group.
format Preprint
id arxiv_https___arxiv_org_abs_2309_03937
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Quantization of Axion-Gauge Couplings and Non-Invertible Higher Symmetries
Choi, Yichul
Forslund, Matthew
Lam, Ho Tat
Shao, Shu-Heng
High Energy Physics - Phenomenology
High Energy Physics - Theory
We derive model-independent quantization conditions on the axion couplings (sometimes known as the anomaly coefficients) to the Standard Model gauge group $[SU(3)\times SU(2)\times U(1)_Y]/\mathbb{Z}_q$ with $q=1,2,3,6$. Using these quantization conditions, we prove that any QCD axion model to the right of the $E/N=8/3$ line on the $|g_{aγγ}|$-$m_a$ plot must necessarily face the axion domain wall problem in a post-inflationary scenario. We further demonstrate the higher-group and non-invertible global symmetries in the Standard Model coupled to a single axion. These generalized global symmetries lead to universal bounds on the axion string tension and the monopole mass. If the axion were discovered in the future, our quantization conditions could be used to constrain the global form of the Standard Model gauge group.
title Quantization of Axion-Gauge Couplings and Non-Invertible Higher Symmetries
topic High Energy Physics - Phenomenology
High Energy Physics - Theory
url https://arxiv.org/abs/2309.03937