4 papers
Induced gravitational waves for arbitrary higher orders: vertex rules and loop diagrams in cosmological perturbation theory
Jing-Zhi Zhou, Yu-Ting Kuang, Di Wu +2
Gravitational waves induced by primordial perturbations serve as crucial probes for studying the early universe, providing a significant window into potential new physics during co…
Constraints on primordial black holes from : scalar induced gravitational waves as an extra radiation component
Jing-Zhi Zhou, Yu-Ting Kuang, Zhe Chang +1
In June 2023, multiple pulsar timing array collaborations provided evidence for the existence of a stochastic gravitational wave background. Scalar induced gravitational waves (SIG…
Scalar induced gravitational waves in f(R) gravity
Jing-Zhi Zhou, Yu-Ting Kuang, Di Wu +3
We investigate the first and second order cosmological perturbation equations in f(R) modified gravity theory and provide the equation of motion of second order scalar induced grav…
Primordial black holes and scalar induced density perturbations: the effects of probability density functions
Jing-Zhi Zhou, Yu-Ting Kuang, Zhe Chang +2
We investigate the second order energy density perturbation induced by small-scale Gaussian and local-type non-Gaussian primordial curvature perturbations. The relative…