超新星中的自相互作用暗部可以表现为相对论流体

IF 8.1 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Physical review letters Pub Date : 2024-12-18 DOI:10.1103/physrevlett.133.251004

Damiano F. G. Fiorillo, Edoardo Vitagliano

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引用次数: 0

摘要

我们重新审视了超新星（SN）对一个由毫冲粒子χ和无质量暗光子组成的隐藏扇区的约束。除非自耦合被微调到很小，否则粒子不会以气体形式离开超新星内核，而是形成相对论流体和随后的暗QED火球，顶着与物质相互作用产生的阻力流出。由于低能超新星地幔中的过度能量沉积，可以得到新的边界。SN 1987A 的冷却边界在自由流机制中意外地没有受到影响。χχ¯→标准模型的加入大大改变了捕获机制中的约束条件，而捕获机制只能用流体力学方法处理。我们的结果可以适用于一般的亚GeV自相互作用暗部门。美国物理学会发表 2024

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Self-Interacting Dark Sectors in Supernovae Can Behave as a Relativistic Fluid

We revisit supernova (SN) bounds on a hidden sector consisting of millicharged particles χ and a massless dark photon. Unless the self-coupling is fine-tuned to be small, rather than exiting the SN core as a gas, the particles form a relativistic fluid and subsequent dark QED fireball, streaming out against the drag due to the interaction with matter. Novel bounds due to excessive energy deposition in the mantle of low-energy supernovae can be obtained. The cooling bounds from SN 1987A are unexpectedly not affected in the free-streaming regime. The inclusion of χχ¯→standard model substantially modifies the constraints in the trapping regime, which can only be treated hydrodynamically. Our results can be adapted to generic sub-GeV self-interacting dark sectors.

Published by the American Physical Society

2024

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来源期刊

Physical review letters 物理-物理：综合

CiteScore

16.50

自引率

7.00%

发文量

2673

审稿时长

2.2 months

期刊介绍： Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks