3 papers
astro-ph.CO2024
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…
gr-qc2024
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…
astro-ph.CO2024
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…