Dynamical dark energy and infinite statistics
Dynamical dark energy and infinite statistics
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DOI：
10.1142/s0217751x22420015
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发表时间：
2020-11
影响因子：
1.6
通讯作者：
Vishnu Jejjala;M. Kavic;D. Minic;T. Takeuchi
中科院分区：
文献类型：
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作者：
Vishnu Jejjala;M. Kavic;D. Minic;T. Takeuchi
在CDM模型中，暗能量被视为恒定的真空能量密度，即爱因斯坦-希尔伯特作用中的宇宙常数。这个假设可以在引入动态暗能量的各种模型中放宽。在本文中，我们认为量子引力中红外（IR）和紫外（UV）自由度的混合导致无限统计量，在非定域存在下与洛伦兹不变性一致的唯一统计量，并产生暗能量的精细结构。在量子引力作用中引入红外和紫外截止点，我们推导出[公式：见文本]作为红移函数的形式，并将其转化为哈勃参数的行为。
In the [Formula: see text]CDM model, dark energy is viewed as a constant vacuum energy density, the cosmological constant in the Einstein–Hilbert action. This assumption can be relaxed in various models that introduce a dynamical dark energy. In this paper, we argue that the mixing between infrared (IR) and ultraviolet (UV) degrees of freedom in quantum gravity leads to infinite statistics, the unique statistics consistent with Lorentz invariance in the presence of nonlocality, and yields a fine structure for dark energy. Introducing IR and UV cutoffs into the quantum gravity action, we deduce the form of [Formula: see text] as a function of redshift and translate this to the behavior of the Hubble parameter.