Difference between revisions of "Zte.m"
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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. | 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. | ||
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projector=zte(spin_system,L,rho,nstates) | projector=zte(spin_system,L,rho,nstates) | ||
| − | == | + | ==Parameters== |
L - the Liouvillian to be used for time | L - the Liouvillian to be used for time | ||
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rho - the initial state to be used for | rho - the initial state to be used for | ||
time propagation | time propagation | ||
| − | + | ||
nstates - if this parameter is specified, only | nstates - if this parameter is specified, only | ||
nstates most populated states are kept, | nstates most populated states are kept, | ||
| Line 32: | Line 32: | ||
==See also== | ==See also== | ||
| − | [[reduce.m]], [[path_trace.m]], [[symmetry.m]], [[krylov.m]] | + | [[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]] |
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| − | ''Version 2.2, authors: [[Ilya | + | ''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
