Zte.m - Revision history

Kuprov: Update function See also links and function index membership

2026-06-06T18:43:25Z

Update function See also links and function index membership

Kuprov: Rename Arguments section heading to Parameters

2026-06-05T17:53:42Z

Rename Arguments section heading to Parameters

Kuprov: Spot-edit Spinach function page first-line NOTOC and template fields

2026-06-05T17:30:05Z

Spot-edit Spinach function page first-line NOTOC and template fields

Kuprov: Normalise preformatted blank lines in function documentation blocks

2026-06-05T16:41:39Z

Normalise preformatted blank lines in function documentation blocks

Kuprov: Normalise sequential blank lines

2026-04-25T11:31:40Z

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Admin: /* See also */

2018-08-30T09:43:35Z

‎See also

Admin at 09:43, 30 August 2018

2018-08-30T09:43:25Z

Admin at 09:43, 30 August 2018

2018-08-30T09:43:11Z

Admin at 15:31, 23 August 2016

2016-08-23T15:31:54Z

Admin: 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..."

2015-12-08T16:09:58Z

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..."

New page

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 default tolerance may be altered by set-
ting sys.tols.zte_tol variable before calling create(). 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 to-
lerance parameter

Output:

projector - projector matrix into the reduced space, to be used
as follows: L_reduced=P'*L*P, rho_reduced=P'*rho;

Further information is available in IK's JMR paper on the subject:

http://dx.doi.org/10.1016/j.jmr.2008.08.008

@@ Line 32: / Line 32: @@
 ==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]]
 ''Version 2.2, authors: [[Ilya Kuprov]]''

@@ Line 6: / Line 6: @@
       projector=zte(spin_system,L,rho,nstates)
-==Arguments==
+==Parameters==
        L       - the Liouvillian to be used for time

← Older revision		Revision as of 17:30, 5 June 2026
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−	{{DISPLAYTITLE:zte.m}}	+	{{DISPLAYTITLE:zte.m}} __NOTOC__
	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.

@@ Line 33: / Line 33: @@
 ==See also==
 [[reduce.m]], [[path_trace.m]], [[symmetry.m]], [[krylov.m]]
 ''Version 2.2, authors: [[Ilya Kuprov]]''

← Older revision		Revision as of 09:43, 30 August 2018
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−	''Version 2.2, authors: [[Ilya ~~Kuprpv~~]]''	+	''Version 2.2, authors: [[Ilya Kuprov]]''

@@ Line 13: / Line 13: @@
        rho     - the initial state to be used for
                  time propagation
-−
        nstates - if this parameter is specified, only
                  nstates most populated states are kept,

@@ Line 1: / Line 1: @@
-Zero track elimination function. Inspects the first few steps in the
+{{DISPLAYTITLE:function.m}}
-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.
-                projector=zte(spin_system,L,rho,nstates)
+==Syntax==
-Parameters:
+     projector=zte(spin_system,L,rho,nstates)
-      L       - the Liouvillian to be used for time propagation
+==Arguments==
-       rho     - the initial state to be used for time propagation
+      L       - the Liouvillian to be used for time
-      nstates - if this parameter is specified, only nstates most
+==Outputs==
-Output:
+      projector - projector matrix into the reduced space,
-      projector - projector matrix into the reduced space, to be used
+==Notes==
-                  as follows: L_reduced=P'*L*P, rho_reduced=P'*rho;
+# Default tolerance may be altered by setting sys.tols.zte_tol variable before calling [[create.m]]
-Further information is available in IK's JMR paper on the subject:
+==See also==
-==Notes==
+''Version 2.2, authors: [[Ilya Kuprpv]]''

← Older revision		Revision as of 15:31, 23 August 2016
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	http://dx.doi.org/10.1016/j.jmr.2008.08.008		http://dx.doi.org/10.1016/j.jmr.2008.08.008
		+
		+	==Notes==
		+	It is a good idea to disable ZTE in systems with nearly equivalent spins.