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hep-ph2025
Particle decay as asymptotic narrow parametric resonance
Shao-Ping Li
Parametric resonance can produce particles from oscillating scalar field, where an exponential growth of the particle number density can be developed. While it has been noticed tha…
hep-ph2025
Asteroid-mass soliton as the dark matter-baryon coincidence solution
Shinya Kanemura, Shao-Ping Li, Ke-Pan Xie
Nontopological solitons formed during first-order phase transitions can serve as macroscopic dark matter candidates, with their stability ensured by a charge asymmetry traditionall…
hep-ph2024
Photon proliferation from multi-body dark matter annihilation
Shao-Ping Li, Ke-Pan Xie
Multi-body dark matter annihilation is commonly expected to be suppressed by higher-order couplings and phase-space factors, therefore being ignored thus far. We show that, however…