Difference between revisions of "Zte.m"
(Created page with "Zero track elimination function. Inspects the first few steps in the system trajectory and drops the states that did not get populated to a user-specified tolerance. The defau...") |
(Update function See also links and function index membership) |
||
| (8 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| − | Zero track elimination function. Inspects the first few steps in the | + | {{DISPLAYTITLE:zte.m}} __NOTOC__ |
| − | system trajectory and drops the states that did not get populated to a | + | Zero track elimination function. Inspects the first few steps in the system trajectory and drops the states that did not get populated to a user-specified tolerance. |
| − | user-specified tolerance. | ||
| − | |||
| − | + | ==Syntax== | |
| − | + | projector=zte(spin_system,L,rho,nstates) | |
| − | + | ==Parameters== | |
| − | rho - the initial state to be used for time propagation | + | L - the Liouvillian to be used for time |
| + | propagation | ||
| + | |||
| + | rho - the initial state to be used for | ||
| + | time propagation | ||
| + | |||
| + | nstates - if this parameter is specified, only | ||
| + | nstates most populated states are kept, | ||
| + | irrespective of the tolerance parameter | ||
| − | + | ==Outputs== | |
| − | |||
| − | |||
| − | + | projector - projector matrix into the reduced space, | |
| + | to be used as follows: | ||
| + | |||
| + | L_reduced=P'*L*P | ||
| + | rho_reduced=P'*rho; | ||
| − | + | ==Notes== | |
| − | + | # Default tolerance may be altered by setting sys.tols.zte_tol variable before calling [[create.m]] | |
| + | # Further information on how this function works is available in IK's JMR paper on the subject, see http://dx.doi.org/10.1016/j.jmr.2008.08.008 | ||
| + | # If tiny interactions or nearly equivalent spins are present, it is best to disable zero track elimination by adding 'zte' to the sys.disable cell array. | ||
| − | + | ==See also== | |
| + | [[reduce.m]], [[path_trace.m]], [[symmetry.m]], [[krylov.m]], [[create.m]], [[adelim.m]], [[coherence.m]], [[correlation.m]], [[dfpt.m]], [[homospoil.m]], [[human2opspec.m]], [[lin2lm.m]], [[lin2lmn.m]], [[lm2lin.m]], [[lmn2lin.m]], [[scomponents.m]], [[sinkhole.m]], [[sparse2csr.m]], [[sphten2zeeman.m]], [[stitch.m]], [[Kernel_utilities]] | ||
| − | + | ''Version 2.2, authors: [[Ilya Kuprov]]'' | |
Latest revision as of 19:43, 6 June 2026
Zero track elimination function. Inspects the first few steps in the system trajectory and drops the states that did not get populated to a user-specified tolerance.
Syntax
projector=zte(spin_system,L,rho,nstates)
Parameters
L - the Liouvillian to be used for time
propagation
rho - the initial state to be used for
time propagation
nstates - if this parameter is specified, only
nstates most populated states are kept,
irrespective of the tolerance parameter
Outputs
projector - projector matrix into the reduced space,
to be used as follows:
L_reduced=P'*L*P
rho_reduced=P'*rho;
Notes
- Default tolerance may be altered by setting sys.tols.zte_tol variable before calling create.m
- Further information on how this function works is available in IK's JMR paper on the subject, see http://dx.doi.org/10.1016/j.jmr.2008.08.008
- If tiny interactions or nearly equivalent spins are present, it is best to disable zero track elimination by adding 'zte' to the sys.disable cell array.
See also
reduce.m, path_trace.m, symmetry.m, krylov.m, create.m, adelim.m, coherence.m, correlation.m, dfpt.m, homospoil.m, human2opspec.m, lin2lm.m, lin2lmn.m, lm2lin.m, lmn2lin.m, scomponents.m, sinkhole.m, sparse2csr.m, sphten2zeeman.m, stitch.m, Kernel_utilities
Version 2.2, authors: Ilya Kuprov
