uni20::tensor_network::LocalTwoSiteEffectiveHamiltonian< Hamiltonian > Class Template Reference

Apply a local two-site operator to a fixed BlockTensor center. More...

#include <two_site_effective_hamiltonian.hpp>

Public Types
using	hamiltonian_type = std::remove_cvref_t< Hamiltonian >

Public Member Functions
auto	hamiltonian () const noexcept -> hamiltonian_type const &
	Return the retained local Hamiltonian.
	LocalTwoSiteEffectiveHamiltonian (hamiltonian_type hamiltonian)
	Retain an immutable local two-site Hamiltonian object.
template<MutableImmediateBlockTensorView Output, detail::TwoSiteCenterView Input> requires detail::CompatibleTwoSiteCenters<Output, Input>
void	operator() (Output &output, Input const &input) const
	Overwrite a fixed center with the Hamiltonian application.

Detailed Description

template<detail::TwoSiteOperatorView Hamiltonian>
class uni20::tensor_network::LocalTwoSiteEffectiveHamiltonian< Hamiltonian >

Apply a local two-site operator to a fixed BlockTensor center.

The center has boundary Domain<left bond, left physical, right physical> -> Codomain<right bond>. The implementation bends both physical factors into the codomain, contracts them with the operator in one adjacent group, and restores the canonical center boundary through zero-copy mapped views. The operator is retained by value for repeated matrix-free Krylov application. When that value is a borrowed view, its ultimate payload owner must outlive this operation object.

Template Parameters

Hamiltonian

Immediate host BlockTensor view describing the local operator.

Member Typedef Documentation

hamiltonian_type

template<detail::TwoSiteOperatorView Hamiltonian>

using uni20::tensor_network::LocalTwoSiteEffectiveHamiltonian< Hamiltonian >::hamiltonian_type = std::remove_cvref_t<Hamiltonian>

Constructor & Destructor Documentation

LocalTwoSiteEffectiveHamiltonian()

template<detail::TwoSiteOperatorView Hamiltonian>

uni20::tensor_network::LocalTwoSiteEffectiveHamiltonian< Hamiltonian >::LocalTwoSiteEffectiveHamiltonian ( hamiltonian_type  hamiltonian )

inlineexplicit

Retain an immutable local two-site Hamiltonian object.

Member Function Documentation

hamiltonian()

template<detail::TwoSiteOperatorView Hamiltonian>

auto uni20::tensor_network::LocalTwoSiteEffectiveHamiltonian< Hamiltonian >::hamiltonian ( ) const -> hamiltonian_type const&

inlinenoexcept

Return the retained local Hamiltonian.

operator()()

template<detail::TwoSiteOperatorView Hamiltonian>

template<MutableImmediateBlockTensorView Output, detail::TwoSiteCenterView Input>
requires detail::CompatibleTwoSiteCenters<Output, Input>

void uni20::tensor_network::LocalTwoSiteEffectiveHamiltonian< Hamiltonian >::operator() ( Output &  output, Input const &  input  ) const

inline

Overwrite a fixed center with the Hamiltonian application.

Template Parameters

Output	Compatible mutable center view.
Input	Compatible read-only center view.

Parameters

output	Fixed-structure destination center.
input	Source center.

Precondition

Output numerical storage does not overlap input or Hamiltonian storage.

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The documentation for this class was generated from the following file:

• two_site_effective_hamiltonian.hpp