Journal
PHYSICAL REVIEW D
Volume 105, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.105.014025
Keywords
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Funding
- Japan Society for the Promotion of Science (JSPS) KAKENHI [18H01211, 19K21874, 20J10506]
- Grants-in-Aid for Scientific Research [20J10506, 19K21874] Funding Source: KAKEN
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We discuss the resummation of hard dense loops at finite quark mass and evaluate the equation of state (EoS) of cold and dense QCD matter in beta equilibrium.
We discuss the hard dense loop resummation at finite quark mass and evaluate the equation of state (EoS) of cold and dense QCD matter in beta equilibrium. The resummation in the quark sector has an effect of lowering the baryon number density and the EoS turns out to have much smaller uncertainty than the perturbative QCD estimate. Our numerical results favor smooth matching between the EoS from the resummed QCD calculation at high density and the extrapolated EoS from the nuclear matter density region. We also point out that the speed of sound in our EoS slightly exceeds the conformal limit.
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