generateCompleteState()

State syten::MPS::RandomState::generateCompleteState	(	Lattice const &	lat,
		Basis const &	target,
		Index const	maxStates = 10,
		Index	maxBlocksize = std::numeric_limits< Index >::max(),
		bool const	verbose = true
	)

Generates a new state, considering every possible basis at every bond transforming as specified and right-normalised with norm 1.

If the lattice is uniform and the involved symmetries are all U(1) or SU(2), it is fairly easy to filter out unneeded reps on every step to reduce the maximal number of used representations. In theory, this would also work for nonuniform lattices, but will require more work.

Parameters

lat	Lattice on which we should build the state
target	Target basis for our state, used on LHS.
maxBlocksize	Maximum sidelengths of blocks to generate. Only applies to generated bases, not to the physical, target or vacuum basis.
maxStates	maximal number of (reduced) states
verbose	Whether to verbosely print information.

Returns

the generated state

References syten::Basis::dir, syten::genRandom(), syten::Out, syten::MPS::State::resize(), SYTEN_ASSERT_DEBUG, SYTEN_ZERO_THRESHOLD, syten::MPS::State::truncate(), and syten::verbose().

Referenced by syten::MPS::ProjectedPurification::generateCompleteState(), and syten::Pyten::init_mps_random().

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