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arXiv · 2108.06175

The CMB bispectrum from bouncing cosmologies

Paola C. M. Delgado·Ruth Durrer·Nelson Pinto-Neto
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Abstract

In this paper we compute the CMB bispectrum for bouncing models motivated by Loop Quantum Cosmology. Despite the fact that the primordial bispectrum of these models is decaying exponentially above a large pivot scale, we find that the cumulative signal-to-noise ratio of the bispectrum induced in the CMB from scales $\ell < 30$ is larger than $10$ in all cases of interest and therefore can, in principle, be detected in the Planck data.

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Paola C. M. Delgado, Ruth Durrer, Nelson Pinto-Neto. 2021-08-13. The CMB bispectrum from bouncing cosmologies. https://doi.org/10.1088/1475-7516/2021/11/024

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