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arXiv 1202.0107astro-ph.COhep-th
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暗能量衰变的观测结果

Observational Consequences of Dark Energy Decay

Ue-Li Pen, Pengjie Zhang

摘要:

我们认为,一般的情况下,暗能量所产生的潜热的一个隐藏的部门一阶宇宙相变。该场可以解释CMB建议的额外辐射自由度。我们提出了粘性极限下的气泡成核解。该领域的衰减率的限制,由已公布的KSZ数据,并可能是目前过剩的ISW相关性的解释。当前和未来调查的互相关可以进一步约束或测试参数空间。衰变模型在可观测范围内是合理的,避免了人择问题。这类模型并没有很好地受到流行的暗能量品质因数的约束。

英文摘要:

We consider the generic scenario of dark energy which arises through the latent heat of a hidden sector first order cosmological phase transition. This field could account for the extra radiation degree of freedom suggested by the CMB. We present the bubble nucleation solution for the viscous limit. The decay rate of the field is constrained by published KSZ data, and may be an explanation of current excess ISW correlations. Cross correlation of current and future surveys can further constrain or test the parameter space. The decay model is plausibly in the observable range, and avoids anthropic problems. This class of models is not well constrained by the popular dark energy figure of merit.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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