N. Vaval et al., STATIONARY COUPLED-CLUSTER RESPONSE - ROLE OF CUBIC TERMS IN MOLECULAR-PROPERTIES, Proceedings of the Indian Academy of Sciences. Chemical sciences, 106(2), 1994, pp. 387-392
We have demonstrated an application of a stationary coupled cluster re
sponse approach for molecular properties using an Euler functional. Th
is involves terms which are of cubic power in cluster amplitudes. We h
ave shown that these are important terms and have also discussed the c
onvergence properties of the functional for higher order properties.