boost::shared_ptr<SparseMatrix> NpdmSpinOps::build_compound_operator( bool is_fermion, int sign,
boost::shared_ptr<SparseMatrix> lhsOp,
boost::shared_ptr<SparseMatrix> rhsOp,
int ispin, std::vector<int> indices, bool transpose )
{
// Initialize new operator
boost::shared_ptr<SparseMatrix> newOp (new Cre);
assert( lhsOp->get_orbs().size() + rhsOp->get_orbs().size() == indices.size() );
newOp->set_orbs() = indices;
newOp->set_initialised() = true;
newOp->set_fermion() = is_fermion;
if (sign == 1) newOp->set_deltaQuantum( 1, ( lhsOp->get_deltaQuantum(0) + rhsOp->get_deltaQuantum(0) ).at(ispin) );
else newOp->set_deltaQuantum( 1, ( lhsOp->get_deltaQuantum(0) - rhsOp->get_deltaQuantum(0) ).at(ispin) );
//cout << "Building compound operator.......................................................\n";
//cout << "2*lhs spin = " << lhsOp->get_deltaQuantum().get_s() << std::endl;
//cout << "2*rhs spin = " << rhsOp->get_deltaQuantum().get_s() << std::endl;
//cout << "2*total spin = " << newOp->get_deltaQuantum().get_s() << std::endl;
newOp->allocate( spinBlock_->get_stateInfo() );
if (transpose) {
// Build compound operator as product of LHS and TRANSPOSE( RHS )
operatorfunctions::Product(spinBlock_, *lhsOp, Transposeview(*rhsOp), *newOp, 1.0 );
}
else {
// Build compound operator as product of LHS and RHS
operatorfunctions::Product(spinBlock_, *lhsOp, *rhsOp, *newOp, 1.0 );
}
//cout << *newOp;
//cout << "Done Building compound operator.......................................................\n";
return newOp;
}
const Transposeview Transpose(SparseMatrix& op) { return Transposeview(op); };
