有限密度效应是否会危及超新星中的轴子核恐惧症？

IF 5 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-01-22 DOI:10.1103/physrevd.111.015018

Luca Di Luzio, Vincenzo Fiorentino, Maurizio Giannotti, Federico Mescia, Enrico Nardi

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引用次数: 0

摘要

在疏核轴子模型中，轴子与质子和中子的耦合同时被抑制，可以放松SN 1987A的严格约束。然而，在有限重子密度效应的影响下，这些模型是否能保持其疏核性质仍不确定。这在接近饱和密度的天体物理环境中尤其重要，比如超新星（SNe）。在这项研究中，我们证明了在有限密度下，疏核溶液仍然是可行的。此外，我们表明，即使考虑到SN核在非均匀环境中的积分，SN轴子束缚在疏核模型中也会明显松弛。2025年由美国物理学会出版

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Do finite density effects jeopardize axion nucleophobia in supernovae?

Nucleophobic axion models, wherein axion couplings to both protons and neutrons are simultaneously suppressed, can relax the stringent constraints from SN 1987A. However, it remains uncertain whether these models maintain their nucleophobic property under the influence of finite baryon density effects. These are especially relevant in astrophysical environments near saturation density, such as supernovae (SNe). In this study, we demonstrate that the nucleophobic solution remains viable also at finite density. Furthermore, we show that the SN axion bound relaxes significantly in nucleophobic models, even when accounting for the integration over the nonhomogeneous environment of the SN core.

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.