Back Wignersche D-Matrix German Matrice D de Wigner French ウィグナーのD行列 Japanese D-матрица Вигнера Russian Вигнерова D матрица Serbian D-матриця Вігнера Ukrainian D函数 Chinese
The Wigner D-matrix is a unitary matrix in an irreducible representation of the groups SU(2) and SO(3). It was introduced in 1927 by Eugene Wigner, and plays a fundamental role in the quantum mechanical theory of angular momentum. The complex conjugate of the D-matrix is an eigenfunction of the Hamiltonian of spherical and symmetric rigid rotors. The letter D stands for Darstellung, which means "representation" in German.