3 papers
astro-ph.CO2026
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:…
astro-ph.CO2025
Constraints on the canonical single-field slow-roll inflation model from observations
Jun Li, Guang-Hai Guo
In this paper we use two methods to constrain the the canonical single-field slow-roll inflation model. The first method exploits the analytic slow-roll-parameter dependence of pri…
gr-qc2024
Probing the speed of scalar-induced gravitational waves with pulsar timing arrays
Zu-Cheng Chen, Jun Li, Lang Liu +1
Recently, several regional pulsar timing array collaborations, including CPTA, EPTA, PPTA, and NANOGrav, have individually reported compelling evidence for a stochastic signal at n…