hope college > natural sciences > csm 

Aces2 Aces II is a series of programs for performing ab initio calculations. The package has a high degree of flexibility, and supports many kinds of calculations at a number of levels of theory. The major strengths of the program are in performing calculations using "manybody" methods to treat electron correlation. These approaches, broadly categorized as manybody perturbation theory (MBPT) and the coupledcluster (CC) approximation, offer a reliable treatment of correlation and have the attractive property of sizeextensivity, meaning that energies scale properly with the size of the system. As a result of this property, MBPT and CC methods are ideally suited for the study of chemical reactions. For complete information see the Aces2 homepage. 
