论文标题
宇宙学恒定问题即将到来
Cosmological constant problem on the horizon
论文作者
论文摘要
我们重新审视量子宇宙常数问题，并突出了零点能量的DS范围所起的重要作用。我们认为，足够轻的场具有可与FLRW哈勃半径相当的零点能量的DS范围，这是深色能量的主要贡献者。另一方面，重场的零点能在亚之间的尺度上产生非线性，并且无法促进黑能。我们推测我们的建议可以通过指出存在一个田地，即（最轻的）中微子，为新的和新的宇宙学恒定问题提供分辨率，恰好具有与当前背景光子温度相当的质量。该提案预测，在宇宙的早期和晚期扩展历史中，黑暗能源的多个瞬态时期产生了当前哈勃扩张率的较高价值，这可以解决$ h_0 $ h_0 $张力问题。
We revisit the quantum cosmological constant problem and highlight the important roles played by the dS horizon of zero point energy. We argue that fields which are light enough to have dS horizon of zero point energy comparable to the FLRW Hubble radius are the main contributors to dark energy. On the other hand, the zero point energy of heavy fields develop nonlinearities on sub-Hubble scales and can not contribute to dark energy. We speculate that our proposal may provide a resolution for both the old and new cosmological constant problems by noting that there exists a field, the (lightest) neutrino, which happens to have a mass comparable to the present background photon temperature. The proposal predicts multiple transient periods of dark energy in early and late expansion history of the universe yielding to a higher value of the current Hubble expansion rate which can resolve the $H_0$ tension problem.
