6 papers
Joint probes of dark matter annihilation from neutrino detectors and CMB targets
Ruifeng Leng, Shao-Ping Li
Dark matter (DM) annihilation into neutrinos provides a promising observational channel targeted by current and forthcoming neutrino detectors. However, the detection of such neutr…
Pseudo-Hermitian QFT: relativistic scattering and symmetry structure
Ruifeng Leng, Cheng-Yang Lee, Siyi Zhou
Unitarity is a cornerstone of quantum theory, ensuring the conservation of probability and information. Although non-Hermitian Hamiltonians are typically associated with open or di…
The anomalous spin-statistics connection arising from pseudo-Hermiticity
Yao Bai, Cheng-Yang Lee, Ruifeng Leng +1
We establish a new spin-statistics theorem for a class of free pseudo-Hermitian quantum field theories whose particles furnish unitary irreducible representations of the Poincaré…
What drives the growth of black holes: a decade of progress
D. M. Alexander, R. C. Hickox, J. Aird +8
The last decade has witnessed significant progress in our understanding of the growth of super-massive black holes (SMBHs). It is now clear that an Active Galactic Nucleus (AGN: th…
Wigner multiplets in QFT: from Wigner degeneracy to Elko fields
Cheng-Yang Lee, Ruifeng Leng, Siyi Zhou
We establish the theoretical foundation of the Wigner superposition field, a quantum field framework for spin-1/2 fermions that exhibit a Wigner doublet -- a discrete quantum numbe…
Wigner multiplets in QFT: dark sector and CPT-violating scenarios
Cheng-Yang Lee, Ruifeng Leng, Siyi Zhou
The classification of elementary particles based on unitary irreducible representations of the Poincare group has been a cornerstone of modern Quantum Field Theory (QFT). While the…