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arXiv · 2001.03879

Cosmological Collider Signatures of Massive Vectors from Non-Gaussian Gravitational Waves

Yi Wang·Yuhang Zhu
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Abstract

The cosmological collider provides a model-independent probe of particle physics during inflation. We extend the study of cosmological collider physics to much smaller scales through gravitational wave (GW) probes. With a Chern-Simons interaction, a massive vector field can obtain a chemical potential and its particle production can cause significant non-Gaussian GW signals. We calculate the mass and spin dependences of the induced GW 3-point correlation function in the squeezed limit, and estimate its amplitude. Such signals may be detectable in the current and upcoming GW interferometer experiments.

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Yi Wang, Yuhang Zhu. 2020-01-12. Cosmological Collider Signatures of Massive Vectors from Non-Gaussian Gravitational Waves. https://doi.org/10.1088/1475-7516%2F2020%2F04%2F049

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