3 papers
hep-ph2025
Sommerfeld Enhancement from Background Force and the Galactic Center GeV Excess
Yu Cheng, Shuailiang Ge
We study the impact of background-induced forces on dark matter (DM) annihilation and their implications for indirect detection. In the presence of a finite number density of backg…
hep-ph2025
Background-Enhanced Axion Force by Axion Dark Matter
Yu Cheng, Shuailiang Ge
We investigate the influence of axion dark matter as a background on the spin-independent axion forces between nucleons. Notably, we find that the potential for axion forces scales…
hep-ph2024
Berry phase in axion physics, SM global structure, and generalized symmetries
Qing-Hong Cao, Shuailiang Ge, Yandong Liu +1
We investigate the Berry phase arising from axion-photon and axion-fermion interactions. The effective Hamiltonians in both systems share the same form, enabling a unified descript…