Non-Gaussian Features of Primordial Gravitational Waves

Understand

We explore possible non-Gaussian features of primordial gravitational waves by constructing model-independent templates for nonlinearity parameters of tensor bispectrum.

• Our analysis is based on Effective Field Theory of inflation that relies on no particular model as such and thus the results are quite generic.
• The analysis further reveals that chances of detecting squeezed limit tensor bispectrum are fairly higher than equilateral limit.
• We also discuss prospects of detectability in upcoming CMB missions.