Preprint
Oct 2026
Cosmological Gravitational Wave Collider Physics
Primordial tensor non-Gaussianity can probe massive particles present during inflation. We investigate this possibility in an effective field theory where the massless graviton mixes with the helicity-two mode of an additional massive spin-two field $\sigma_{ij}$ with cubic self-interactions. For constant sound speed,...
Sukannya Bhattacharya, M. Fasiello, A. Ghoshal et al.
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