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A quantitative analysis of Gravitational Wave spectrum sourced from First-Order Chiral Phase Transition of QCD
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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.
Forward citations
Cited by 3 Pith papers
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Impact of Primordial Magnetic Fields on the First-Order Electroweak Phase Transition
A primordial hypermagnetic field slows the first-order electroweak transition, forms Higgs vortices above g'B/m_W^2 ~ 3.63, and helical fields boost sphaleron rates and baryon asymmetry.
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The equation of state and surface tension of QCD in the first order phase transition region
A parametrized order-parameter model yields the equation of state, spinodal boundaries, and surface tension for the first-order QCD phase transition.
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The effect of charm quark on the QCD chiral phase diagram
Adding a dynamical charm quark moves the predicted QCD critical endpoint from (102.9 MeV, 618.8 MeV) to (104.3 MeV, 600.1 MeV).
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