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arXiv · 2407.03795

A quantitative analysis of Gravitational Wave spectrum sourced from First-Order Chiral Phase Transition of QCD

Hui-wen Zheng·Fei Gao·Ligong Bian·Si-xue Qin·Yu-xin Liu
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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 $\mathcal{O}(10^2)$ MeV. These results further suggest that the GW signals of NANOGrav are very unlikely sourced from the chiral phase transition of QCD.

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Hui-wen Zheng, Fei Gao, Ligong Bian, Si-xue Qin, Yu-xin Liu. 2024-07-04. A quantitative analysis of Gravitational Wave spectrum sourced from First-Order Chiral Phase Transition of QCD. https://arxiv.org/abs/2407.03795

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