Fully Loop-Quantum-Cosmology-corrected propagation of gravitational waves during slow-roll inflation

Understand

The cosmological primordial power spectrum is known to be one of the most promising observable to probe quantum gravity effects.

• In this article, we investigate how the tensor power spectrum is modified by Loop Quantum Gravity corrections.
• The two most important quantum terms, holonomy and inverse volume, are explicitly taken into account in a unified framework.
• The equation of propagation of gravitational waves is derived and solved for one set of parameters.