3 papers
astro-ph.CO2025
Constraints on Pre-Big-Bang Cosmology from Advanced LIGO and Advanced Virgo's First Three Observing Runs
Qin Tan, Zu Cheng Chen, You Wu +1
We search for the stochastic gravitational-wave background (SGWB) predicted by pre-big-bang (PBB) cosmology using data from the first three observing runs of Advanced LIGO and Adva…
astro-ph.CO2025
Pre-Big-Bang Cosmology Cannot Explain NANOGrav 15-year Signal
Qin Tan, You Wu, Lang Liu
We investigate whether the Pre-Big Bang (PBB) scenario from string cosmology can explain the stochastic gravitational wave background signal reported in the NANOGrav 15-year datase…
astro-ph.CO2025
Implications for the non-Gaussianity of primordial gravitational waves from pulsar timing arrays
Zhi-Zhang Peng, You Wu, Lang Liu
The detection of a stochastic signal by recent pulsar timing array (PTA) collaborations, including NANOGrav, PPTA, EPTA+InPTA, CPTA and MPTA, has opened a new window to explore gra…