Conveners
Parallel session 2
- Wenyuan Ai (Tsung-Dao Lee Institute, Shanghai Jiao Tong University)
In this talk, I will report our progress on baryogenesis and phase transition.
Assuming the dark matter (DM) particle has hadronic interactions, we estimate the SN1987A limits on the effective hadronic DM couplings in the framework of dim-5 and dim-6 operators. The cross sections for the effective DM-nucleon couplings can be excluded up to $\sim10^{-52}\,{\rm cm}^2$ for DM mass down to the MeV scale, depending largely on the interaction type. We also update the supernova...
Neutron stars (NS's) with their strong magnetic fields and hot dense cores could be powerful probes of axions, a classic benchmark of feebly-coupled new particles, through abundant production of axions with the axion-nucleon coupling and subsequent conversion into X-rays due to the axion-photon coupling. In this article, we point out that the pulsation structures in both the intensity and...
The chiral gravitational wave background (GWB) can be generated by axion‑like fields in the early universe. The conventional notion of an audible axion relies on couplings between axions and gauge fields. Here we consider an axion‑like mechanism coupled to the gravitational topological term, which enables direct and efficient production of gravitational waves during the radiation‑dominated era...
We present a novel framework of the post-inflationary composite axion to address the strong CP problem without the cosmological domain wall problem. Conventional composite axion models lead to the domain wall number greater than one, producing stable axion domain walls that overclose the Universe. We show that by considering a special embedding of the confining gauge group responsible for the...
In this talk, I will discuss about my recent work on the searches for the ultralight scalar dark matter with quadratic interactions with SM fields. This will lead to the effective interactions between the ultralight dark matter and the nucleon fields phi^2 N N/f below the QCD confinement scale, which can be thought as potential barrier for the dark matter wind in the presence of ordinary...
This talk presents a unified view of glueball dark matter and related composite states in confining dark Yang–Mills sectors. I first review lattice-informed effective descriptions of dark confinement and chiral dynamics, and show how the resulting phase transitions can generate potentially observable gravitational-wave signals, especially in fermionic and near-conformal regimes. I then discuss...
The tRopIcal DEep-sea Neutrino Telescope (TRIDENT) project aims to pioneer the development of a next-generation deep-sea neutrino observatory. Designed to detect high-energy astrophysical neutrinos, TRIDENT seeks to address the century-old puzzle of the origin of cosmic rays. Furthermore, it will enable precise measurements of the flavor ratio of astrophysical neutrinos, providing valuable...
