论文标题
来自单粒子轴线深色能量的宇宙双折射
Cosmic Birefringence from Monodromic Axion Dark Energy
论文作者
论文摘要
最近报道的Planck 2018极化数据中的非零各向同性双向角度为新轴的物理学提供了诱人的提示。在本文中，我们通过一个弦理论来解释这一点，该理论激发了轴心，具有扮演暗能量的单肌电势。在使用这种情况下，使用双向反射测量和对暗能量状态方程的约束后，我们发现轴衰变常数上的上限为$ f_a \ lyssim 10^{16} $ gev。这自然提供了有序肠道的能量量表，并可以解决常规轴轴线暗能量模型的超级普兰克场范围的理论问题。我们进一步研究了宇宙双折射对基本理论的含义及其对弦滚动猜想的后果。我们终于讨论了黑暗能源部门和预期的宇宙双向断层扫描中的振荡特征。
The recently reported non-zero isotropic birefringence angle in Planck 2018 polarization data provides a tantalizing hint for new physics of axions. In this paper, we explain this by a string theory motivated axion with a monodromy potential that plays the role of dark energy. Upon using the birefringence measurement and the constraint on the equation of state for dark energy in this scenario, we find an upper bound on the axion decay constant as $f_a \lesssim 10^{16}$ GeV. This naturally gives an energy scale of order GUT and can resolve the theoretical issue of super-Planckian field range of the conventional axion dark energy model. We further study the implications of cosmic birefringence for the underlying theory and its consequences for the string swampland conjectures. We finally discuss oscillatory features in the dark energy sector and the expected cosmic birefringence tomography.
