تقرير
Bayesian uncertainty quantification of perturbative QCD input to the neutron-star equation of state
| العنوان: | Bayesian uncertainty quantification of perturbative QCD input to the neutron-star equation of state |
|---|---|
| المؤلفون: | Gorda, Tyler, Komoltsev, Oleg, Kurkela, Aleksi, Mazeliauskas, Aleksas |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics High Energy Physics - Phenomenology Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena, Nuclear Theory |
| الوصف: | The equation of state of neutron-star cores can be constrained by requiring a consistent connection to the perturbative Quantum Chromodynamics (QCD) calculations at high densities. The constraining power of the QCD input depends on uncertainties from missing higher-order terms, the choice of the unphysical renormalization scale, and the reference density where QCD calculations are performed. Within a Bayesian approach, we discuss the convergence of the perturbative QCD series, quantify its uncertainties at high densities, and present a framework to systematically propagate the uncertainties down to neutron-star densities. We find that the effect of the QCD input on the neutron-star inference is insensitive to the various unphysical choices made in the uncertainty estimation. Comment: Version 2 - published version, minor changes. 12 pages, 10 figs |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/JHEP06(2023)002 |
| URL الوصول: | http://arxiv.org/abs/2303.02175 |
| رقم الأكسشن: | edsarx.2303.02175 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/JHEP06(2023)002 |
|---|