expectation_rec()

STensor syten::T3N::expectation_rec	(	State::cPtrc const	aptr,
		Operator::cPtrc const	optr,
		State::cPtrc const	bptr
	)

Returns the partial contraction of tensors below (and including) the supplied pointers.

The first pointer is not complex conjugated, the second pointer is complex conjugated.

References syten::MPS::conj(), syten::STensorImpl::STensor::e(), syten::STensorImpl::gen_merge(), syten::STensorImpl::project(), syten::rank(), SYTEN_ASSERT_DEBUG, and SYTEN_ASSERT_MSG.

Referenced by expectation().

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