Difference between revisions of "Superop.m"
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==Notes== | ==Notes== | ||
| − | This | + | This is a very general function to which direct calls are not usually required; use the friendlier [[operator.m]] function where possible. |
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| + | The superoperator is returned in XYZ sparse format, which is different from Matlab's CSC sparse format. | ||
==See also== | ==See also== | ||
Revision as of 16:03, 5 June 2026
Sided product superoperator in the spherical tensor basis set. Returns superoperators corresponding to right or left multiplication of a density matrix by a user-specified operator.
Syntax
A=superop(spin_system,opspec,side)
Arguments
opspec - Spinach operator specification described in Sections 2.1
and 3.3 of the following paper:
http://dx.doi.org/10.1016/j.jmr.2010.11.008
side - 'left' or 'right' causes the function to return a product
superoperator corresponding to a product from that side;
'comm' or 'acomm' results in commutation and anticommuta-
tion superoperator respectively.
Outputs
A - a three-column array of row indices (first column),
column indices (second column) and values (third column).
Examples
See examples in the Spinach distribution relevant to this function.
Notes
This is a very general function to which direct calls are not usually required; use the friendlier operator.m function where possible.
The superoperator is returned in XYZ sparse format, which is different from Matlab's CSC sparse format.
See also
Version 2.11, authors: Ilya Kuprov, Hannah Hogben
