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Tensor Bispectrum Mediated by an Excited Scalar Field During Inflation by Peng, Zhi-Zhang; Fang, Cheng-Jun; Guo, Zong-Kuan is a scholarly article available to read on EtoBox.

What is Tensor Bispectrum Mediated by an Excited Scalar Field During Inflation about?

We calculate the tensor bispectrum mediated by an excited scalar field during inflation and find that the bispectrum peaks in the squeezed configuration, which is different from that of gravitational waves induced by enhanced curvature perturbations re-entering the horizon in the radiation-dominated era. Measuring the bispectrum provides a promising way to distinguish the stochastic gravitational-wave background generated during inflation from that generated after inflation.

Author

Peng, Zhi-Zhang; Fang, Cheng-Jun; Guo, Zong-Kuan

Published

2024

Language

EN