Comment on some results of Erdahl and the convex structure of reduced density matrices

Jianxin Chen, Zhengfeng Ji, Mary Beth Ruskai +2

In J. Math. Phys. 13, 1608-1621 (1972), Erdahl considered the convex structure of the set of $N$-representable 2-body reduced density matrices in the case of fermions. Some of thes…