Veneziano极限下全息QCD中的同位旋不对称性和中子星

IF 5.3 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-05-28 DOI:10.1103/physrevd.111.106021

Lorenzo Bartolini, Sven Bjarke Gudnason, Matti Järvinen

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引用次数: 0

摘要

将同位旋不对称核物质引入到自底向上全息量子cd模型V-QCD中。利用一个小的同位旋化学势，我们提取了模型中的对称能，发现其中一些势与实验结果非常吻合。扩展了有限和任意尺寸同位旋化学势的计算，我们通过通常的Tolman-Oppenheimer-Volkov方程构造β平衡中子星。令人高兴的是，我们发现，通过质量半径和潮汐变形能力约束的中子星，其势也会导致优异的对称能。2025年由美国物理学会出版

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Isospin asymmetry and neutron stars in holographic QCD in the Veneziano limit

Isospin asymmetric nuclear matter is introduced to V-QCD, a bottom-up holographic QCD model. Using a small isospin chemical potential, we extract the symmetry energy in the model, finding excellent agreement with experimental results for some of the potentials. Extending the calculation for finite- and arbitrary-sized isospin chemical potentials, we construct β-equilibrated neutron stars via the usual Tolman-Oppenheimer-Volkov equations. We find, pleasingly, that the neutron stars passing the mass-radius and tidal deformability constraints are those with the potentials that also lead to excellent symmetry energies.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.