Detection prospects for the Cosmic Neutrino Background using laser interferometers
arXiv:1703.08629 · doi:10.1088/1475-7516/2017/06/055
Abstract
The cosmic neutrino background is a key prediction of Big Bang cosmology which has not been observed yet. The movement of the earth through this neutrino bath creates a force on a pendulum, as if it was exposed to a cosmic wind. We revise here estimates for the resulting pendulum acceleration and compare it to the theoretical sensitivity of an experimental setup where the pendulum position is measured using current laser interferometer technology as employed in gravitational wave detectors. We discuss how a significant improvement of this setup can be envisaged in a micro gravity environment. The proposed setup could simultaneously function as a dark matter detector in the sub-MeV range, which currently eludes direct detection constraints.
17 pages, 1 figure; v2 contains extended discussions but conclusions remain unchanged, version published in JCAP
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