# The Quantum Origin of Quasi de Sitter: a Model Independent Quantum Cosmological Tilt

@article{Gmez2020TheQO, title={The Quantum Origin of Quasi de Sitter: a Model Independent Quantum Cosmological Tilt}, author={C{\'e}sar G{\'o}mez and Raul Jimenez}, journal={arXiv: High Energy Physics - Theory}, year={2020} }

The most robust prediction of inflationary cosmology is the existence of a red tilt for the spectrum of curvature fluctuations that is experimentally of order $0.04$. The tilt is derived solving the exact equation for quantum fluctuations in a quasi de Sitter background defined by a equation of state $\epsilon \equiv \frac{(p+\rho)}{\rho}$ with $\epsilon$ small but non vanishing. The experimental data selects among the different quasi de Sitter inflaton potentials. The origin of the lack of…

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