可迁移暗能量衰变为暗物质的制约因素

IF 2.5 4区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS Universe Pub Date : 2024-09-18 DOI:10.3390/universe10090371
Jônathas S. T. de Souza, Gustavo S. Vicente, Leila L. Graef
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引用次数: 0

摘要

我们重新审视了暗能量向暗物质的能量转移可以在场论中用一阶相变来描述的提议。我们分析了文献中提出的一种可陨落暗能量模型,并使用了最新数据对可陨落暗能量衰变时间的最新约束。我们的分析结果表明,没有潜在的可观测信号可以把这种情况与ΛCDM区分开来。我们首次分析了这一模型中的气泡成核过程,结果表明,即使在遥远的未来,这种模型也不会完全过渡到暗物质主导的阶段。尽管如此,最新的数据并没有排除这一模型,而且我们证实,这一过程所产生的暗物质粒子的质量与类轴子粒子的质量相对应,而类轴子粒子是目前动机最好的暗物质候选粒子之一。我们认为,该模型的扩展(可能还有额外的耦合)仍然值得进一步关注,因为它可以为基于单一标量场的相互作用暗部门情景提供有趣而可行的描述。
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Constraints on Metastable Dark Energy Decaying into Dark Matter
We revisit the proposal that an energy transfer from dark energy into dark matter can be described in field theory by a first order phase transition. We analyze a metastable dark energy model proposed in the literature, using updated constraints on the decay time of a metastable dark energy from recent data. The results of our analysis show no prospects for potentially observable signals that could distinguish this scenario from the ΛCDM. We analyze, for the first time, the process of bubble nucleation in this model, showing that such model would not drive a complete transition to a dark matter dominated phase even in a distant future. Nevertheless, the model is not excluded by the latest data and we confirm that the mass of the dark matter particle that would result from such a process corresponds to the mass of an axion-like particle, which is currently one of the best motivated dark matter candidates. We argue that extensions to this model, possibly with additional couplings, still deserve further attention as it could provide an interesting and viable description for an interacting dark sector scenario based in a single scalar field.
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来源期刊
Universe
Universe Physics and Astronomy-General Physics and Astronomy
CiteScore
4.30
自引率
17.20%
发文量
562
审稿时长
24.38 days
期刊介绍: Universe (ISSN 2218-1997) is an international peer-reviewed open access journal focused on fundamental principles in physics. It publishes reviews, research papers, communications, conference reports and short notes. Our aim is to encourage scientists to publish their research results in as much detail as possible. There is no restriction on the length of the papers.
期刊最新文献
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