two_site_split.hpp File Reference

Splits a two-site center and installs directional MPS factors. More...

#include <uni20/symmetry/block_tensor_contract.hpp>
#include <uni20/symmetry/block_tensor_linear.hpp>
#include <uni20/symmetry/block_tensor_repartition.hpp>
#include <uni20/symmetry/block_tensor_space_traits.hpp>
#include <uni20/symmetry/block_tensor_svd.hpp>
#include <uni20/tensor_network/finite_chain.hpp>
#include <concepts>
#include <cstddef>
#include <stdexcept>
#include <type_traits>
#include <utility>
#include <vector>

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Classes
struct	uni20::tensor_network::InstalledMpsBond< SingularValues, Truncation >
	Bond data retained after installing a two-site MPS split. More...
struct	uni20::tensor_network::TwoSiteMpsSplit< FirstSite, SecondSite, SingularValues, Truncation >
	Directionally absorbed two-site MPS factors and retained bond data. More...

Namespaces
namespace	uni20
namespace	uni20::tensor_network

Enumerations
enum class	uni20::tensor_network::MpsSweepDirection { uni20::tensor_network::left_to_right , uni20::tensor_network::right_to_left }
	Direction in which a two-site split moves the MPS canonical center. More...

Functions
template<detail::TwoSiteSvdCenter Center, class Measurements , class Event > requires uni20::LapackScalar<block_tensor_value_t<Center>> && performance::BatchMeasurementPolicy<Measurements, Event>
auto	uni20::tensor_network::decompose_two_site_center (Center const &center, linalg::SvdOptions options, Measurements &measurements, Event batch_event)
	Factorize a canonical two-site MPS center by its internal cut with performance measurements.
template<detail::TwoSiteSvdCenter Center> requires uni20::LapackScalar<block_tensor_value_t<Center>>
auto	uni20::tensor_network::decompose_two_site_center (Center const &center, linalg::SvdOptions options={})
	Factorize a canonical two-site MPS center by its internal cut.
template<SparseBlockStorage OutputStorage = SeparateSparseBlockStorage<>, class Decomposition > requires detail::MpsSiteStorage<OutputStorage, typename Decomposition::scalar_type>
auto	uni20::tensor_network::materialize_two_site_mps_split (Decomposition const &decomposition, BlockSvdSelection< typename Decomposition::real_type > const &selection, MpsSweepDirection direction, BlockSvdMaterializationOptions options={})
	Materialize selected SVD states as a directional pair of owning MPS sites.
template<typename Scalar , Space Bond, Space Physical, BlockTensorStorage SiteStorage, class Decomposition > requires std::same_as<Bond, BlockSpace> && detail::MpsSiteStorage<SiteStorage, Scalar>
auto	uni20::tensor_network::replace_two_site_from_svd (FiniteMps< Scalar, Bond, Physical, SiteStorage > &mps, std::size_t first_index, Decomposition const &decomposition, BlockSvdSelection< typename Decomposition::real_type > const &selection, MpsSweepDirection direction, BlockSvdMaterializationOptions options={})
	Materialize and install a selected two-site split in a finite MPS.

Detailed Description

Splits a two-site center and installs directional MPS factors.