Equation of state of cold and dense QCD matter in resummed perturbation theory
arXiv:2011.10891 · doi:10.1103/PhysRevD.105.014025
Abstract
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 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.
9 pages, 6 figures; Figs. 5 and 6 are updated, results unchanged
References in corpus (13)
- Shapiro delay measurement of a two solar mass neutron star
- A Massive Pulsar in a Compact Relativistic Binary
- The equation of state in (2+1)-flavor QCD
- Cold Quark Matter
- Astrophysical Measurement of the Equation of State of Neutron Star Matter
- Constraints on neutron star radii based on chiral effective field theory interactions
- Sound velocity bound and neutron stars
- Limiting masses and radii of neutron stars and their implications
- Perturbative Thermal QCD: Formalism and Applications
- Soft interactions in cold quark matter
- Cold quark matter at N3LO: soft contributions
- Extensive Studies of the Neutron Star Equation of State from the Deep Learning Inference with the Observational Data Augmentation
- Little-Bang and Femto-Nova in Nucleus-Nucleus Collisions
Cited by in corpus (17)
- How perturbative QCD constrains the Equation of State at Neutron-Star densities
- Trace anomaly as signature of conformality in neutron stars
- Inference of the sound speed and related properties of neutron stars
- Holographic modeling of nuclear matter and neutron stars
- Gravitational Wave Signal for Quark Matter with Realistic Phase Transition
- Peaks of sound velocity in two color dense QCD: quark saturation effects and semishort range correlations
- Sound velocity peak and conformality in isospin QCD
- Insights on the peak in the speed of sound of ultradense matter
- Central Speed of Sound, Trace Anomaly and Observables of Neutron Stars from Perturbative Analyses of Scaled TOV Equations
- All order resummed leading and next-to-leading soft modes of dense QCD pressure
- Speed of Sound for Hadronic and Quark Phases in a Magnetic Field
- Novel Scalings of Neutron Star Properties from Analyzing Dimensionless Tolman--Oppenheimer--Volkoff Equations
- Sound velocity peak induced by the chiral partner in dense two-color QCD
- Equation of state of neutron star matter and its warm extension with an interacting hadron resonance gas
- Love-C relations for elastic hybrid stars
- Thermodynamics of strongly magnetized dense quark matter from hard dense loop perturbation theory
- Renormalizing the Quark-Meson-Diquark Model