hot dark matter
Technical term in cosmology for a hypothetical form of dark matter consisting of particles moving at relativistic speeds. Contrasts with 冷たい暗黒物質 (cold dark matter).
See also: 冷たい暗黒物質
Hot dark matter is thought to have influenced the formation of large-scale structures in the universe.
Cold dark matter consists of slow-moving particles and is the standard model for structure formation, while hot dark matter involves fast, relativistic particles and is largely ruled out as the dominant component.
Compound of 熱い (hot) + 暗黒物質 (dark matter), a direct translation of the English term 'hot dark matter'.