spin_half_heisenberg.hpp File Reference

Constructs U(1) spin-half product states and Heisenberg MPOs. More...

#include <uni20/core/scalar_concepts.hpp>
#include <uni20/symmetry/block_space.hpp>
#include <uni20/symmetry/u1.hpp>
#include <uni20/tensor_network/finite_chain.hpp>
#include <cstddef>
#include <stdexcept>
#include <string>
#include <string_view>
#include <utility>
#include <vector>

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Classes
struct	uni20::models::SpinHalfU1Site
	U(1)-symmetric spin-half local space and its two state charges. More...

Namespaces
namespace	uni20
namespace	uni20::models

Typedefs
template<RealOrComplex Scalar>
using	uni20::models::SpinHalfU1Mpo = tensor_network::FiniteMpo< Scalar, LocalSpace, LocalSpace, PackedSparseBlockStorage<> >
	Packed finite MPO type produced by the spin-half model builders.
template<RealOrComplex Scalar, BlockTensorStorage Storage = PackedSparseBlockStorage<>>
using	uni20::models::SpinHalfU1Mps = tensor_network::FiniteMps< Scalar, BlockSpace, LocalSpace, Storage >
	Finite MPS type produced by the spin-half model builders.

Enumerations
enum class	uni20::models::SpinHalfState { uni20::models::up , uni20::models::down }
	Physical state selected at the first site of a spin-half product pattern. More...

Functions
template<RealOrComplex Scalar = double, BlockTensorStorage Storage = PackedSparseBlockStorage<>> requires ImmediateLocalBlockStorageFor<Storage, Scalar, 3, 2>
auto	uni20::models::make_neel_product_mps (std::size_t length, SpinHalfU1Site const &local, SpinHalfState first=SpinHalfState::up) -> SpinHalfU1Mps< Scalar, Storage >
	Construct a normalized alternating spin-half product MPS.
template<RealOrComplex Scalar = double>
auto	uni20::models::make_spin_half_heisenberg_mpo (std::size_t length, SpinHalfU1Site const &local, make_real_t< Scalar > exchange=make_real_t< Scalar >{1}, make_real_t< Scalar > longitudinal_field=make_real_t< Scalar >{}) -> SpinHalfU1Mpo< Scalar >
	Construct the open spin-half Heisenberg Hamiltonian as a finite MPO.
auto	uni20::models::make_spin_half_u1_site (std::string_view charge_name="Sz") -> SpinHalfU1Site
	Construct the standard U(1)-symmetric spin-half local space.

Detailed Description

Constructs U(1) spin-half product states and Heisenberg MPOs.