Institute for Gravitation and the Cosmos & Physics Department, Penn State, University Park, Pennsylvania 16802, USA.
Phys Rev Lett. 2012 Dec 21;109(25):251301. doi: 10.1103/PhysRevLett.109.251301. Epub 2012 Dec 17.
Since the standard inflationary paradigm is based on quantum field theory on classical space-times, it excludes the Planck era. Using techniques from loop quantum gravity, the paradigm is extended to a self-consistent theory from the Planck scale to the onset of slow roll inflation, covering some 11 orders of magnitude in energy density and curvature. This preinflationary dynamics also opens a small window for novel effects, e.g., a source for non-Gaussianities, which could extend the reach of cosmological observations to the deep Planck regime of the early Universe.
由于标准的通胀范式是基于经典时空中的量子场论，因此它排除了普朗克时代。利用循环量子引力的技术，该范式扩展到一个自洽的理论，从普朗克尺度到缓慢滚动通胀的开始，涵盖了大约 11 个数量级的能量密度和曲率。这种预通胀动力学也为新效应开辟了一个小窗口，例如非高斯效应的源，这可能将宇宙观测的范围扩展到早期宇宙的深普朗克区域。
