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arXiv · 2108.11423

Neutrinos as a probe of curvature

Jafar Khodagholizadeh
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Abstract

Neutrinos, as the anisotropic stress tensor, have a damping effect on the tensor mode perturbation from inflation to the $ \Lambda$ dominated era. First, we study the squared amplitude reduction for the wavelength entering the horizon during radiation and matter-dominated phases in the negatively curved de Sitter spacetime. Then, by comparing with other spatial spacetimes, $ K=0 $ and $K=1$, the highest difference between closed and open cases is seen in the matter-dominated era. Thus, neutrinos can be added as another candidate for determining the nature of space-time.

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Jafar Khodagholizadeh. 2021-08-25. Neutrinos as a probe of curvature. https://doi.org/10.1016/j.jheap.2021.08.002

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