syten::Krylov::SolverPolicies::ExponentialFineOverlap Class Reference

Exponential solver which also calculates a fine grid of overlaps for every time step taken. More...

#include <solver_policies.h>

Inheritance diagram for syten::Krylov::SolverPolicies::ExponentialFineOverlap:

Collaboration diagram for syten::Krylov::SolverPolicies::ExponentialFineOverlap:

Public Member Functions
template<typename VectorType , typename StreamType >
void	sp_wrapup (DenseTensor< 2, SDef > const &projected_mat, std::vector< VectorType > const &krylov, SRDef initialnorm, SDef toffset, SDef tbeg, SDef dt, Index num_points, std::vector< VectorType > const &overlapee, std::vector< StreamType > &output)
	Wrap-Up implementation discretizing the timestep dt into num_points smaller timesteps in which overlaps with the vectors stored in 'overlapees' will be computed and streamed into the outstreams stored in the vector 'output'. More...
template<typename VectorType , typename StreamType >
void	sp_wrapup (DenseTensor< 2, SDef > const &projected_mat, std::vector< VectorType > const &krylov, SRDef initialnorm, SDef toffset, SDef tbeg, SDef dt, Index num_points, VectorType const &overlapee, StreamType &output)
	Wrap-Up implementation which discretises the current timestep dt into num_points steps and evaluates the overlap with the vector overlapee at each of those steps. More...
Public Member Functions inherited from syten::Krylov::SolverPolicies::Exponential
SRDef	sp_convergence (DenseTensor< 2, SDef > mat, SDef _idt)
	Returns the change in coefficients between the last call and the current call with the new matrix. More...
template<typename Vec >
auto	sp_result (std::vector< Vec > const &krylov, SRDef initialnorm, SDef _idt) const
	Calculates \( \mathrm{exp}(t H) |\psi\rangle \) where \( |\psi \rangle \) is taken as the first element of krylov multiplied by its initial norm initialnorm and t = _idt. More...
template<typename... Unused>
void	sp_wrapup (Unused &&...)
	Unused dummy implementation. More...

Additional Inherited Members
Static Protected Member Functions inherited from syten::Krylov::SolverPolicies::Exponential
static DenseTensor< 1, SDef >	get_coeffs (DenseTensor< 2, SDef > mat, SDef _idt)
	Given a dense matrix mat and a coefficient _idt, attempts to calculate the coefficients of the basis vectors to sum up to \( \mathrm{exp}( \mathtt{_idt} H) |e_0\rangle \). More...

Detailed Description

Exponential solver which also calculates a fine grid of overlaps for every time step taken.

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

• inc/alg/solver_policies.h