momentum space
Technical term in quantum mechanics; the space of possible momentum vectors. Often contrasted with 実空間 (じつくうかん, position space).
See also: 実空間
In quantum mechanics, one sometimes considers the wave function in momentum space.
Position space, the usual coordinate space, as opposed to momentum space.
Compound of 運動量 (momentum) and 空間 (space). A direct calque of the English term 'momentum space'.