name

calls method in Kallay’s MRCC program [manual]

mrccsd

CC through doubles

mrccsdt

CC through triples

mrccsdtq

CC through quadruples

mrccsdtqp

CC through quintuples

mrccsdtqph

CC through sextuples

mrccsd(t)

CC through doubles with perturbative triples

mrccsdt(q)

CC through triples with perturbative quadruples

mrccsdtq(p)

CC through quadruples with pertubative quintuples

mrccsdtqp(h)

CC through quintuples with pertubative sextuples

mrccsd(t)_l

mrccsdt(q)_l

mrccsdtq(p)_l

mrccsdtqp(h)_l

mrccsdt-1a

CC through doubles with iterative triples (cheapest terms)

mrccsdtq-1a

CC through triples with iterative quadruples (cheapest terms)

mrccsdtqp-1a

CC through quadruples with iterative quintuples (cheapest terms)

mrccsdtqph-1a

CC through quintuples with iterative sextuples (cheapest terms)

mrccsdt-1b

CC through doubles with iterative triples (cheaper terms)

mrccsdtq-1b

CC through triples with iterative quadruples (cheaper terms)

mrccsdtqp-1b

CC through quadruples with iterative quintuples (cheaper terms)

mrccsdtqph-1b

CC through quintuples with iterative sextuples (cheaper terms)

mrcc2

approximate CC through doubles

mrcc3

approximate CC through triples

mrcc4

approximate CC through quadruples

mrcc5

approximate CC through quintuples

mrcc6

approximate CC through sextuples

mrccsdt-3

CC through doubles with iterative triples (all but the most expensive terms)

mrccsdtq-3

CC through triples with iterative quadruples (all but the most expensive terms)

mrccsdtqp-3

CC through quadruples with iterative quintuples (all but the most expensive terms)

mrccsdtqph-3

CC through quintuples with iterative sextuples (all but the most expensive terms)