antisymmetrizer → αντισυμμετρικοποιητής, αντισυμμετρικοποιητικός τελεστής
αντισυμμετριστής
In quantum mechanics, an antisymmetrizer (also known as antisymmetrizing operator) is a linear operator that makes a wave function of N identical fermions antisymmetric under the exchange of the coordinates of any pair of fermions.
Antisymmetrizer - Wikipedia