A quantitative analysis of Gravitational Wave spectrum sourced from First-Order Chiral Phase Transition of QCD
High Energy Physics - Phenomenology
2025-02-12 v2 Cosmology and Nongalactic Astrophysics
Abstract
We investigate the cosmological first-order chiral phase transition of QCD, and for the first time calculate its parameters which can fully determine the gravitational wave spectrum. With the state-of-the-art calculation from the functional QCD method, we found that the large chemical potential of QCD phase transition results in very weak and fast first-order phase transitions at the temperature lower than MeV. These results further suggest that the GW signals of NANOGrav are very unlikely sourced from the chiral phase transition of QCD.
Cite
@article{arxiv.2407.03795,
title = {A quantitative analysis of Gravitational Wave spectrum sourced from First-Order Chiral Phase Transition of QCD},
author = {Hui-wen Zheng and Fei Gao and Ligong Bian and Si-xue Qin and Yu-xin Liu},
journal= {arXiv preprint arXiv:2407.03795},
year = {2025}
}