1.5k citations · 10.6k across the 150 of their papers we have counts for
152 papers
Have pulsar timing array methods detected a cosmological phase transition?
Andrea Addazi, Yi-Fu Cai, Antonino Marciano +1
We show that the recent detection of a gravitational wave (GW) background reported by various pulsar timing array (PTA) collaborations including NANOGrav-15yr, PPTA, EPTA, and CPTA…
Limits on scalar-induced gravitational waves from the stochastic background by pulsar timing array observations
Yi-Fu Cai, Xin-Chen He, Xiao-Han Ma +2
Recently, the NANOGrav, PPTA, EPTA, and CPTA collaborations independently reported their evidence of the Stochastic Gravitational Waves Background (SGWB). While the inferred gravit…
Highly non-Gaussian tails and primordial black holes from single-field inflation
Yi-Fu Cai, Xiao-Han Ma, Misao Sasaki +2
For primordial perturbations, deviations from Gaussian statistics on the tail of the probability distribution can be associated with non-perturbative effects of inflation. In this…
Gaussian processes and effective field theory of gravity under the tension
Xin Ren, Sheng-Feng Yan, Yaqi Zhao +2
We consider the effective field theory formulation of torsional gravity in a cosmological framework to alter the background evolution. Then we use the latest measurement from…
Scalar and Tensor Perturbations in DHOST Bounce Cosmology
Mian Zhu, Amara Ilyas, Yunlong Zheng +2
We investigate the bounce realization in the framework of DHOST cosmology, focusing on the relation with observables. We perform a detailed analysis of the scalar and tensor pertur…
Beating the Lyth bound by parametric resonance during inflation
Yi-Fu Cai, Jie Jiang, Misao Sasaki +2
We propose a novel mechanism for enhancing the primordial gravitational waves without significantly affecting the curvature perturbations produced during inflation. This is achieve…