Function sequant::mbpt::op::can_change_qns

• Defined in File op.cpp

Function Documentation

bool sequant::mbpt::op::can_change_qns(const ExprPtr &op_or_op_product, const qns_t &target_qns, const qns_t &source_qns = {})

Checks if a given Operator or Operator Product can change the quantum numbers from source_qns to target_qns.

Parameters:

• op_or_op_product – the operator or operator product to check

• target_qns – the target quantum numbers

• source_qns – the source quantum numbers