expectation_value() [1/6]

STensor syten::IPEPSv2::expectation_value	(	State const &	psi,
		CornerTransferMatrix const &	ctm,
		A12Op const &	op
	)

Calculates the expectation value of the state psi with respect to the applied one/two-site operator op using the CTM ctm.

References syten::conj(), syten::STensorImpl::demerge(), syten::STensorImpl::flip_in_product(), syten::STensorImpl::flip_on_tensor(), syten::IdentityDenseTensorImpl::merge(), syten::STensorImpl::remove_dummy_leg(), syten::STensorImpl::snorm(), syten::STensorImpl::svd(), SYTEN_ASSERT_MSG, SYTEN_SMALL_THRESHOLD, and std::tie().

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