Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA.
Phys Rev Lett. 2015 Apr 17;114(15):151303. doi: 10.1103/PhysRevLett.114.151303. Epub 2015 Apr 14.
Cosmic inflation provides an attractive framework for understanding the early Universe and the cosmic microwave background. It can readily involve energies close to the scale at which quantum gravity effects become important. General considerations of black hole quantum mechanics suggest nontrivial constraints on any effective field theory model of inflation that emerges as a low-energy limit of quantum gravity, in particular, the constraint of the weak gravity conjecture. We show that higher-dimensional gauge and gravitational dynamics can elegantly satisfy these constraints and lead to a viable, theoretically controlled and predictive class of natural inflation models.
宇宙暴胀为理解早期宇宙和宇宙微波背景提供了一个有吸引力的框架。它可以很容易地涉及到接近量子引力效应变得重要的尺度的能量。黑洞量子力学的一般性考虑对任何作为量子引力的低能极限而出现的暴胀有效场论模型都提出了非平凡的约束，特别是弱引力猜想的约束。我们表明，高维规范和引力动力学可以优雅地满足这些约束，并导致一类可行的、理论上可控和可预测的自然暴胀模型。
