1.5k citations · 10.6k across the 150 of their papers we have counts for
36 papers · 1 filter
NANOGrav results and Dark First Order Phase Transitions
Andrea Addazi, Yi-Fu Cai, Qingyu Gan +2
The recent NANOGrav evidence of a common-source stochastic background provides a hint to Gravitational Waves (GW) radiation from the Early Universe. We show that this result can be…
Low-Temperature Enhancement of Semi-annihilation and the AMS-02 Positron Anomaly
Yi Cai, Andrew Spray
Semi-annihilation is a generic feature of particle dark matter that is most easily probed by cosmic ray experiments. We explore models where the semi-annihilation cross section is…
Two-field cosmological phase transitions and gravitational waves in the singlet Majoron model
Youping Wan, Batool Imtiaz, Yi-Fu Cai
In the singlet Majoron model, we study cosmological phase transitions (PTs) and their resulting gravitational waves (GWs), in the two-field phase space, without freezing any of the…
Testing Dark Matter Models with Radio Telescopes in light of Gravitational Wave Astronomy
Andrea Addazi, Yi-Fu Cai, Antonino Marciano
In this Letter we put forward a novel phenomenological paradigm in which particle physics beyond the Standard Model may be tested by radio astronomy if they are related to a first…
Lepton Number Violation: Seesaw Models and Their Collider Tests
Yi Cai, Tao Han, Tong Li +1
The Majorana nature of neutrinos is strongly motivated from the theoretical and phenomenological point of view. A plethora of neutrino mass models, known collectively as Seesaw mod…
From the trees to the forest: a review of radiative neutrino mass models
Yi Cai, Juan Herrero-García, Michael A. Schmidt +2
A plausible explanation for the lightness of neutrino masses is that neutrinos are massless at tree level, with their mass (typically Majorana) being generated radiatively at one o…