Function sequant::mbpt::op::H_pt

Function Documentation

ExprPtr sequant::mbpt::op::H_pt(std::size_t order, std::size_t R)

Makes perturbation operator of rank R.

Parameters:
  • order – order of perturbation

  • R – rank of the operator,R = 1 implies one-body perturbation

Pre:

order==1, only first order perturbation is supported now