Jul 12 – 16, 2021
Europe/Zurich timezone

Recent progress in cosmological collider physics

Jul 14, 2021, 4:50 PM


Zhong-Zhi Xianyu (Harvard University)


Heavy particles can be produced on shell during inflation and leave distinct signals in the correlations of density fluctuations. These signals can be searched for in the future CMB/LSS/21cm observations. In this talk I will introduce the basics of this cosmological collider program. I will then describe some recent works along this direction with fun physics and visibly large signals, including seeing heavy neutrinos, probing CP violations, missing energies, and a scenario of Cosmological Higgs Collider where the high-energy Higgs interactions can be measured from the primordial non-Gaussianity.

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