Continuum dark matter
Continuum dark matter
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DOI：
10.1103/physrevd.105.035025
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发表时间：
2021-05
影响因子：
5
通讯作者：
Csaba Cs'aki;Sungwoo Hong;G. Kurup;Seung J. Lee;M. Perelstein;W. Xue
中科院分区：
文献类型：
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作者：
Csaba Cs'aki;Sungwoo Hong;G. Kurup;Seung J. Lee;M. Perelstein;W. Xue
我们开始了基于能隙连续统的暗物质模型的研究。暗物质由具有连续质量分布的状态的混合物组成，随着宇宙的膨胀而演变。我们提出了一个有效的场论描述的间隙连续，概述了希尔伯特空间的结构，并展示了如何处理这样一个系统的热力学。这种形式使我们能够详细地研究带隙连续统DM的宇宙学演化和唯象。作为一个具体的例子，我们考虑一个弱相互作用连续（WIC）模型，一个缺口连续对应熟悉的WIMP。DM通过Z门户与SM交互。该模型成功地再现了所观察到的文物密度，而直接检测的限制，由于连续运动学的效果被避免。该模型具有惊人的观测结果，包括整个宇宙学历史中DM态的连续衰变，以及碰撞机产生的DM态的级联衰变。我们还描述了如何WIC理论可以产生从一个本地的，酉标量QFT传播的五维弯曲的背景与软壁。ar X iv：2 10 5. 07 03 5v 2 [ he pph ] 1 7 Jul l 2 02 1
We initiate the study of dark matter models based on a gapped continuum. Dark matter consists of a mixture of states with a continuous mass distribution, which evolves as the universe expands. We present an effective field theory describing the gapped continuum, outline the structure of the Hilbert space and show how to deal with the thermodynamics of such a system. This formalism enables us to study the cosmological evolution and phenomenology of gapped continuum DM in detail. As a concrete example, we consider a weakly-interacting continuum (WIC) model, a gapped continuum counterpart of the familiar WIMP. The DM interacts with the SM via a Z-portal. The model successfully reproduces the observed relic density, while direct detection constraints are avoided due to the effect of continuum kinematics. The model has striking observational consequences, including continuous decays of DM states throughout cosmological history, as well as cascade decays of DM states produced at colliders. We also describe how the WIC theory can arise from a local, unitary scalar QFT propagating on a five-dimensional warped background with a soft wall. ar X iv :2 10 5. 07 03 5v 2 [ he pph ] 1 7 Ju l 2 02 1