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SyTen
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SyTen
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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, 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... | |
Exponential solver which also calculates a fine grid of overlaps for every time step taken.
1.9.1