Classical Algorithm 1: Coupled Cluster. ⢠Factorised many-body expansion. ⢠Obtain energy and coefficients via projection (like PT). Ë. H = âpq hpqa1 p aq + â pqrs gpqrsa1 p a1 q aras. T = âai t a i a1 a ai + â abij t ab ij a1 a a1 b aja
Classical Algorithm 1: Coupled Cluster. ⢠Factorised many-body expansion. ⢠Obtain energy and coefficients via projection (like PT). Ë. H = âpq hpqa1 p aq + â pqrs gpqrsa1 p a1 q aras. T = âai t a i a1 a ai + â abij t ab ij a1 a a1 b aja