Difference between revisions of "Relaxation.m"
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| − | {{DISPLAYTITLE:relaxation.m}} | + | {{DISPLAYTITLE:relaxation.m}} __NOTOC__ |
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Relaxation superoperator. | Relaxation superoperator. | ||
==Syntax== | ==Syntax== | ||
| − | + | R=relaxation(spin_system,euler_angles) | |
==Arguments== | ==Arguments== | ||
| − | + | euler_angles - three Euler angles (ZYZ active convention | |
| − | + | in radians) specifying system orientation | |
| − | + | relative to the input orientation; requi- | |
| − | + | by those theories that support relaxation | |
| + | rate anisotropy. It has no effect on tho- | ||
| + | se theories (e.g. Redfield) that do not. | ||
==Outputs== | ==Outputs== | ||
| − | + | R - relaxation superoperator | |
==Notes== | ==Notes== | ||
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# A variety of relaxation theories are supported, see the [[relaxation theory parameters]] section of the online manual. | # A variety of relaxation theories are supported, see the [[relaxation theory parameters]] section of the online manual. | ||
# Spinach [[kernel_contexts|context functions]] include kinetics superoperators into the total Liovillian automatically. | # Spinach [[kernel_contexts|context functions]] include kinetics superoperators into the total Liovillian automatically. | ||
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==See also== | ==See also== | ||
| + | |||
[[equilibrium.m]], [[thermalize.m]], [[hamiltonian.m]], [[lindbladian.m]], [[kinetics.m]], [[magpump.m]] | [[equilibrium.m]], [[thermalize.m]], [[hamiltonian.m]], [[lindbladian.m]], [[kinetics.m]], [[magpump.m]] | ||
''Version 2.2, authors: [[Ilya Kuprov]], [[Luke Edwards]], [[Alexander Karabanov]], [[Walter Kockenberger]]'' | ''Version 2.2, authors: [[Ilya Kuprov]], [[Luke Edwards]], [[Alexander Karabanov]], [[Walter Kockenberger]]'' | ||
Revision as of 15:06, 5 April 2026
Relaxation superoperator.
Syntax
R=relaxation(spin_system,euler_angles)
Arguments
euler_angles - three Euler angles (ZYZ active convention
in radians) specifying system orientation
relative to the input orientation; requi-
by those theories that support relaxation
rate anisotropy. It has no effect on tho-
se theories (e.g. Redfield) that do not.
Outputs
R - relaxation superoperator
Notes
- A variety of relaxation theories are supported, see the relaxation theory parameters section of the online manual.
- Spinach context functions include kinetics superoperators into the total Liovillian automatically.
- The function has been written for minimal memory footprint and performs aggressive memory recycling. Relaxation superoperator dimensions in excess of 1,000,000 are in practice feasible.
See also
equilibrium.m, thermalize.m, hamiltonian.m, lindbladian.m, kinetics.m, magpump.m
Version 2.2, authors: Ilya Kuprov, Luke Edwards, Alexander Karabanov, Walter Kockenberger
