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arXiv 2302.00344hep-phastro-ph.COgr-qchep-th
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原初宇宙学扰动的最小解释

A Minimal Explanation of the Primordial Cosmological Perturbations

Neil Turok, Latham Boyle

摘要:

我们概述了宇宙学中原始密度扰动的新解释。零维场是粒子物理学标准模型的最小补充:如果希格斯偶线是突现的,它们会在不引入任何新粒子的情况下抵消真空能量和两个外尔反常。此外,这种抵消解释了为什么有三代基本粒子,包括RH中微子。我们展示了零维场的量子零点涨落如何产生尺度不变的高斯绝热密度扰动。我们用标准模型耦合计算了原始扰动的振幅,得到了与大尺度观测一致的结果。在两个关键的理论假设下,我们计算的振幅和倾斜度都与观测值一致,没有自由参数。

英文摘要:

We outline a new explanation for the primordial density perturbations in cosmology. Dimension zero fields are a minimal addition to the Standard Model of particle physics: if the Higgs doublet is emergent, they cancel the vacuum energy and both Weyl anomalies without introducing any new particles. Furthermore, the cancellation explains why there are three generations of elementary particles, including RH neutrinos. We show how quantum zero point fluctuations of dimension zero fields seed nearly scale-invariant, Gaussian, adiabatic density perturbations. We calculate the amplitude of the primordial perturbations in terms of Standard Model couplings and find a result consistent with large scale observations. Subject to two key theoretical assumptions, both the amplitude and the tilt we calculate agree with the observed values, with no free parameters.

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