Gravitational Waves and Dark Radiation from Dark Phase Transition: Connecting NANOGrav Pulsar Timing Data and Hubble Tension

Publication date: Available online 22 March 2021Source: Physics Letters BAuthor(s): Yuichiro Nakai, Motoo Suzuki, Fuminobu Takahashi, Masaki Yamada

Source: Physics Letters B - March 23, 2021 Category: Physics Source Type: research