genParity() [2/2]

Tensor< 4 > syten::MPS::Lat::genParity	(	Basis const &	mpo_basis,
		Basis const &	site_basis,
		Index const	symmetry,
		Index const	label
	)

Generates a parity tensor \( p \) with diagonal entries 1 for states with even fermion number and -1 for states with odd fermion number.

Parameters

mpo_basis	right (and, if flipped, left) MPO basis
site_basis	upper (and, if flipped, lower) MPO basis
symmetry	number (1-indexed) of the particle number symmetry
label	label index (0-indexed) within the symmetry

References syten::MPS::genMPOId(), syten::Tensor< rank >::reduce(), and syten::MPS::Operator::uIdx.

Referenced by syten::MPS::QcLatticeGenerator::construct_su2u1(), syten::MPS::ChemHelper::createLeftSSO(), syten::MPS::Lat::U1U1::genFermiBoseLattice(), syten::MPS::Lat::U1U1::genFermiHubbardAngularMomentum(), syten::MPS::Lat::SU2U1Z::genFermiHubbardKNS(), syten::MPS::Lat::U1U1Z::genFermiHubbardKNS(), syten::MPS::Lat::U1U1::genKondoModel(), syten::MPS::Lat::U1U1::gentJ(), and syten::MPS::Lat::SU2U1::gentJHardCoreBoson().

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