5 papers · 1 filter
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 scalar induced gravitational waves from observations
Jun Li, Guang-Hai Guo
We measure the scalar induced gravitational waves from the cosmic microwave background (CMB) observations and the gravitational wave observations. In the CDM+ model, we const…
Measuring the spectral running from cosmic microwave background and primordial black holes
Jun Li, Qing-Guo Huang
We constrain the spectral running by combining cosmic microwave background (CMB) data, baryon acoustic oscillation (BAO) data and the constraint from primordial black holes (PBHs).…