Difference between revisions of "Propagator.m"
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| − | Calculates exponential | + | {{DISPLAYTITLE:propagator.m}} __NOTOC__ |
| + | Calculates exponential propagator exp(-i*L*timestep) using scaled and squared Taylor series method. | ||
| − | + | ==Syntax== | |
| − | + | P=propagator(spin_system,L,timestep) | |
| − | |||
| − | + | ==Parameters== | |
| − | |||
| − | + | L - Hamiltonian or Liouvillian matrix | |
| − | + | ||
| + | timestep - propagation time step | ||
| − | + | ==Outputs== | |
| − | |||
| − | Notes: | + | P - propagator matrix |
| − | point, as well as the Pade method. None of them | + | |
| − | lived up to their marketing. | + | ==Notes== |
| + | # GPUs are supported, add 'gpu' to sys.enable array during calculation setup. | ||
| + | # Propagator caching (https://doi.org/10.1063/1.4928978) is supported, add 'caching' to sys.enable array during calculation setup. | ||
| + | # We did have Chebyshev and Newton series here at one point, as well as the Pade method. None of them lived up to their marketing. | ||
| + | |||
| + | ==See also== | ||
| + | [[evolution.m]], [[krylov.m]], [[step.m]], [[shaped_pulse_af.m]], [[shaped_pulse_xy.m]], [[equilibrium.m]], [[bos2ist.m]], [[boson_mono.m]], [[boson_ortho.m]], [[centrans.m]], [[ct2ist.m]], [[enlev2bm.m]], [[enlev2ist.m]], [[hamiltonian.m]], [[kinetics.m]], [[lindbladian.m]], [[oper2bm.m]], [[oper2ist.m]], [[operator.m]], [[orientation.m]], [[relaxation.m]], [[sin_tran.m]], [[weyl.m]], [[Kernel_functions]] | ||
| + | |||
| + | ''Version 2.2, authors: [[Ilya Kuprov]], [[Luke Edwards]]'' | ||
Latest revision as of 19:40, 6 June 2026
Calculates exponential propagator exp(-i*L*timestep) using scaled and squared Taylor series method.
Syntax
P=propagator(spin_system,L,timestep)
Parameters
L - Hamiltonian or Liouvillian matrix timestep - propagation time step
Outputs
P - propagator matrix
Notes
- GPUs are supported, add 'gpu' to sys.enable array during calculation setup.
- Propagator caching (https://doi.org/10.1063/1.4928978) is supported, add 'caching' to sys.enable array during calculation setup.
- We did have Chebyshev and Newton series here at one point, as well as the Pade method. None of them lived up to their marketing.
See also
evolution.m, krylov.m, step.m, shaped_pulse_af.m, shaped_pulse_xy.m, equilibrium.m, bos2ist.m, boson_mono.m, boson_ortho.m, centrans.m, ct2ist.m, enlev2bm.m, enlev2ist.m, hamiltonian.m, kinetics.m, lindbladian.m, oper2bm.m, oper2ist.m, operator.m, orientation.m, relaxation.m, sin_tran.m, weyl.m, Kernel_functions
Version 2.2, authors: Ilya Kuprov, Luke Edwards
