401 citations · 829 across the 23 of their papers we have counts for
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astro-ph.CO2016★ 25 cited
Chirality oscillation of primordial gravitational waves during inflation
Yong Cai, Yu-Tong Wang, Yun-Song Piao
We show that if the gravitational Chern-Simons term couples to a massive scalar field (), the primordial gravitational waves (GWs) will show itself the chirality oscillation,…
astro-ph.CO2016★ 48 cited
Propagating speed of primordial gravitational waves and inflation
Yong Cai, Yu-Tong Wang, Yun-Song Piao
We show that if the propagating speed of gravitational waves (GWs) gradually diminishes during inflation, the power spectrum of primordial GWs will be strongly blue, while that of…