Uncertainty quantification in the machine-learning inference from neutron star probability distribution to the equation of state

Y Fujimoto, K Fukushima, S Kamata, K Murase - Physical Review D, 2024 - APS
We discuss the machine-learning inference and uncertainty quantification for the equation of
state (EOS) of the neutron star matter directly using the NS probability distribution from the …

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 …

Constraints on Phase Transitions in Neutron Star Matter

L Brandes, W Weise - Symmetry, 2024 - mdpi.com
Recent inference results of the sound velocity in the cores of neutron stars are summarized.
Implications for the equation of state and the phase structure of highly compressed baryonic …

Neutron stars and the dense matter equation of state: from microscopic theory to macroscopic observations

K Chatziioannou, H Cromartie, S Gandolfi… - arXiv preprint arXiv …, 2024 - arxiv.org
The past years have witnessed tremendous progress in understanding the properties of
neutron stars and of the dense matter in their cores, made possible by electromagnetic …

First-order phase transitions in the cores of neutron stars

O Komoltsev - Physical Review D, 2024 - APS
I explore various scenarios for the phase transition within neutron-star matter. I do so by
generating large model-agnostic ensemble using Gaussian processes, both with and …

The intrabinary shock and companion star of redback pulsar j2215+ 5135

AG Sullivan, RW Romani - The Astrophysical Journal, 2024 - iopscience.iop.org
Abstract PSR J2215+ 5135 (J2215) is a" redback" spider pulsar, where the intrabinary shock
(IBS) wraps around the pulsar rather than the stellar-mass companion. Spider orbital light …

How the QCD trace anomaly behaves at the core of twin stars?

JC Jiménez, L Lazzari, VP Gonçalves - Physical Review D, 2024 - APS
We investigate the behavior of the dense and cold (normalized) quantum chromodynamics
(QCD) trace anomaly, Δ, in the interior of twin neutron stars (obtained from several sets of …

Particle-theory input for neutron-star physics

A Vuorinen - arXiv preprint arXiv:2405.01141, 2024 - arxiv.org
Understanding the properties and physical phase of the dense strongly interacting matter
present in the cores of neutron stars or created in their binary mergers remains one of the …