4 papers
Probing the stochastic signal from primordial gravitational waves with pulsar timing arrays
Jun Li, Guanghai Guo, Pengfei Yan
In this study, we investigate the scenario in which the stochastic signal arises from primordial gravitational waves. Within this framework, we consider two distinct possibilities:…
Constraints on the canonical single-field slow-roll inflation model from observations
Jun Li, Guanghai Guo, Guang-Hai Guo +2
In this work, we employ two complementary approaches to constrain the canonical single-field slow-roll inflation scenario. The first method makes explicit use of the analytic depen…
Probing the scalar-induced gravitational waves with the Five-hundred-meter Aperture Spherical radio Telescope and the Square Kilometer Array
Jun Li, Guanghai Guo, Pengfei Yan
Gravitational wave astronomy presents a promising opportunity to directly observe scalar-induced gravitational waves originating from the early universe. Experiments, including gro…
Measuring the speed of scalar induced gravitational waves from observations
Jun Li, Guang-Hai Guo
We investigate the scalar induced gravitational waves which propagate with a speed different from the speed of light. First, we analytically calculate the expression of the power s…