Title: The rotational invariants constructed by the products of three spherical harmonic polynomials

Speaker: Prof. Zhong-Qi Ma (IHEP，CAS)

Time: 10:00AM, May 10th (Thursday)

Place: Theory Division，319

Abstract: H. Weyl (1946) established a theorem on the important structure for rotational invariants. Biedenharn and Louck in their famous Encyclopedia of mathematics on angular momentum (1981) studied the most important case (n=3) of the general theorem in some detail. However, they pointed out in their book: ‘Unfortunately, the expression for the general coefficient has not been
given in the literature.’. In this talk, we have solved the problem raised by Biedenharn and Louck and present the expressions for the coefficients generally and explicitly.