uni20::tensor_network::DmrgLanczosResult< Real, Vector > Struct Template Reference

Approximate local ground state produced by fixed-step DMRG Lanczos. More...

#include <dmrg_lanczos.hpp>

Collaboration diagram for uni20::tensor_network::DmrgLanczosResult< Real, Vector >:

Public Attributes
Real	energy
	Smallest Ritz value of the final projected problem.
int	iteration_count
	Number of completed Lanczos projection steps.
int	matvec_count
	Number of effective-Hamiltonian applications.
Real	residual_bound
	Final three-term-recurrence Ritz residual estimate.
Vector	vector
	Smallest Ritz vector reconstructed in the original vector space.

Detailed Description

template<uni20::Real Real, class Vector>
struct uni20::tensor_network::DmrgLanczosResult< Real, Vector >

Approximate local ground state produced by fixed-step DMRG Lanczos.

Template Parameters

Real	Real component type of the local wavefunction scalar.
Vector	Opaque local wavefunction type.

Member Data Documentation

energy

template<uni20::Real Real, class Vector >

Real uni20::tensor_network::DmrgLanczosResult< Real, Vector >::energy

Smallest Ritz value of the final projected problem.

iteration_count

template<uni20::Real Real, class Vector >

int uni20::tensor_network::DmrgLanczosResult< Real, Vector >::iteration_count

Number of completed Lanczos projection steps.

matvec_count

template<uni20::Real Real, class Vector >

int uni20::tensor_network::DmrgLanczosResult< Real, Vector >::matvec_count

Number of effective-Hamiltonian applications.

residual_bound

template<uni20::Real Real, class Vector >

Real uni20::tensor_network::DmrgLanczosResult< Real, Vector >::residual_bound

Final three-term-recurrence Ritz residual estimate.

vector

template<uni20::Real Real, class Vector >

Vector uni20::tensor_network::DmrgLanczosResult< Real, Vector >::vector

Smallest Ritz vector reconstructed in the original vector space.

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

• dmrg_lanczos.hpp