Ab-initio QCD Calculations Impact the Inference of the Neutron-star-matter Equation of State

T Gorda, O Komoltsev, A Kurkela - The Astrophysical Journal, 2023 - iopscience.iop.org
We demonstrate that ab-initio calculations in QCD at high densities offer significant and
nontrivial information about the equation of state of matter in the cores of neutron stars …

Astrophysical equation-of-state constraints on the color-superconducting gap

A Kurkela, K Rajagopal, R Steinhorst - Physical Review Letters, 2024 - APS
We demonstrate that astrophysical constraints on the dense-matter equation of state place
an upper bound on the color-superconducting gap in dense matter above the transition from …

Long Range Plan: Dense matter theory for heavy-ion collisions and neutron stars

A Lovato, T Dore, RD Pisarski, B Schenke… - arXiv preprint arXiv …, 2022 - arxiv.org
Since the release of the 2015 Long Range Plan in Nuclear Physics, major events have
occurred that reshaped our understanding of quantum chromodynamics (QCD) and nuclear …

Bayesian uncertainty quantification of perturbative QCD input to the neutron-star equation of state

T Gorda, O Komoltsev, A Kurkela… - Journal of High Energy …, 2023 - Springer
A bstract The equation of state of neutron-star cores can be constrained by requiring a
consistent connection to the perturbative Quantum Chromodynamics (QCD) calculations at …

Pressure and speed of sound in two-flavor color-superconducting quark matter at next-to-leading order

A Geißel, T Gorda, J Braun - Physical Review D, 2024 - APS
Deconfined quark matter at asymptotically high densities is weakly coupled, due to the
asymptotic freedom of quantum chromodynamics. In this weak-coupling regime, bulk …

Perturbative QCD meets phase quenching: The pressure of cold Quark Matter

P Navarrete, R Paatelainen, K Seppänen - Physical Review D, 2024 - APS
Nonperturbative inequalities constrain the thermodynamic pressure of quantum
chromodynamics (QCD) with its phase-quenched version, a sign-problem-free theory …

Nontrivial features in the speed of sound inside neutron stars

D Mroczek, MC Miller, J Noronha-Hostler, N Yunes - Physical Review D, 2024 - APS
Measurements of neutron star masses, radii, and tidal deformability have direct connections
to nuclear physics via the equation of state (EoS), which for the cold, catalyzed matter in …

Bounding the QCD Equation of State with the Lattice

GD Moore, T Gorda - Journal of High Energy Physics, 2023 - Springer
A bstract The equation of state of QCD matter at high densities is relevant for neutron star
structure and for neutron star mergers and has been a focus of recent work. We show how …

Average speed of sound in neutron stars

M Marczenko - Physical Review C, 2024 - APS
The structure of the dense-matter equation of state is essential for the phenomenology of
neutron stars. In this work, I relate the thermodynamic properties to the average speed of …

Cold and dense perturbative QCD in a very strong magnetic background

ES Fraga, LF Palhares, TE Restrepo - Physical Review D, 2024 - APS
We compute the pressure from first principles within perturbative QCD at finite baryon
density and very high magnetic fields up to two-loops and with physical quark masses. The …