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Similar

X. Chen and Y. Wang, “Quasi-Single Field Inflation with Large Mass,” JCAP
Original
2012
Cited alongside, same era.
D. Baumann and D. Green, “Signatures of Supersymmetry from the Early Universe,” Phys. Rev
Original
2012
Cited alongside, same era.
J. B. Muñoz, Y. Ali-Haïmoud, and M. Kamionkowski, “Primordial non-gaussianity from the bispectrum of 21-cm fluctuations in the dark ages,” Phys. Rev
Original
2015
Cited alongside, same era.
H. Lee, D. Baumann, and G. L. Pimentel, “Non-Gaussianity as a Particle Detector,” JHEP
Original
2016
Cited alongside, same era.
X. Chen, Y. Wang, and Z.-Z. Xianyu, “Loop Corrections to Standard Model Fields in Inflation,” JHEP
Original

Then

X. Chen, Y. Wang, and Z.-Z. Xianyu, “Neutrino Signatures in Primordial Non-Gaussianities,” JHEP
Original
2018
Later among the works it cites.
X. Chen, W. Z. Chua, Y. Guo, Y. Wang, Z.-Z. Xianyu, and T. Xie, “Quantum Standard Clocks in the Primordial Trispectrum,” JCAP
Original
2018
Later among the works it cites.
H. An, M. McAneny, A. K. Ridgway, and M. B. Wise, “Quasi Single Field Inflation in the non-perturbative regime,” JHEP
Original
2018
Later among the works it cites.
A. V. Iyer, S. Pi, Y. Wang, Z. Wang, and S. Zhou, “Strongly Coupled Quasi-Single Field Inflation,” JCAP
Original
2018
Later among the works it cites.
S. Kumar and R. Sundrum, “Heavy-Lifting of Gauge Theories By Cosmic Inflation,” JHEP

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2019

In Search of Large Signals at the Cosmological Collider

Wang, Lian-Tao, Xianyu, Zhong-Zhi

Understand

We look for oscillating signals in the primordial bispectrum from new physics heavy particles which are visibly large for next generation large scale structures (LSS) survey.

We show that in ordinary inflation scenarios where a slow-rolling inflaton generates density fluctuations and with no breaking of scale invariance or spacetime symmetry, there exist no naturally large signals unless the rolling inflaton generates a parity-odd chemical potential for the heavy particles.
We estimate the accessibility of this signal through observations.
While current CMB data are already sensitive in the most optimistic scenario, future probes, including LSS survey and 21 cm observation, can cover interesting regions of the model space.