mps_mpo_mps_ctr_right()

Tensor< 3 > syten::MPS::mps_mpo_mps_ctr_right	(	Tensor< 3 > const &	right,
		Tensor< 3 > const &	lower,
		Tensor< 3 > const &	upper,
		Tensor< 4 > const &	op
	)

Calculates a new right-contraction of an MPO with an MPS.

Parameters

right	the previous-right contractions.
lower	the ‘lower’ MPS component, not complex-conjugated
upper	the ‘upper’ MPS component, complex-conjugated
op	the local operator component

Returns

the new right-contraction

Pictorially:

3-[ upper]--[3       ]
      |     [        ]
1-[  op  ]--[1 right ]
      |     [        ]
2-[ lower]--[2       ]

upper, op and lower follow the standard index ordering.

Referenced by apply_op_orthogonalise_fit(), syten::MPS::TDVP::LBOWorker::calc_contrr(), syten::MPS::TDVP::Worker::calcContrR(), syten::MPS::ProjectedPurification::correlator(), and syten::MPS::ProjectedPurification::local_expectation().

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