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hep-ph2022★ 50 cited
Parity-Odd and Even Trispectrum from Axion Inflation
Xuce Niu, Moinul Hossain Rahat, Karthik Srinivasan +1
The four-point correlation function of primordial scalar perturbations has parity-even and parity-odd contributions and the parity-odd signal in cosmological observations is openin…
hep-ph2022★ 34 cited
Gravitational Wave Probes of Massive Gauge Bosons at the Cosmological Collider
Xuce Niu, Moinul Hossain Rahat, Karthik Srinivasan +1
We extend the reach of the ``cosmological collider'' for massive gauge boson production during inflation from the CMB scales to the interferometer scales. Considering a Chern-Simon…