Difference between revisions of "Sphten2mat.m"

From Spinach Documentation Wiki
Jump to: navigation, search
(Created page with "Converts the nine components of the irreducible spherical tensor representation of an interaction tensor into the Cartesian representation with a 3x3 matrix. Spherical tenso...")
 
Line 1: Line 1:
−
Converts the nine components of the irreducible spherical tensor representation of an interaction tensor into the Cartesian representation with a 3x3 matrix.  
+
{{DISPLAYTITLE:sphten2mat.m}} __NOTOC__
 +
Converts the nine components of the irreducible spherical tensor representation of an interaction tensor into the Cartesian representation with a 3x3 matrix. The conventions are matched to Equation (18) of the paper by Len Mueller (http://dx.doi.org/10.1002/cmr.a.20224).
  
 
Spherical tensor components should be listed in the following order:
 
Spherical tensor components should be listed in the following order:
Line 7: Line 8:
 
  rank 2: (2,2) (2,1) (2,0) (2,-1) (2,-2)
 
  rank 2: (2,2) (2,1) (2,0) (2,-1) (2,-2)
  
−
and should be supplied as coefficients in front of the corresponding irreducible spherical tenror operators. Syntax:
+
and should be supplied as coefficients in front of the corresponding irreducible spherical tensor operators returned by [[irr_sph_ten.m]] function.
  
−
                    M=sphten2mat(rank0,rank1,rank2)
+
==Syntax==
  
−
Parameters:
+
    M=sphten2mat(rank0,rank1,rank2)
  
−
  rank0      - a single number giving the coefficient of T(0,0) in
+
==Arguments==
−
                the spherical tensor expansion.
 
  
−
  rank1      - a row vector with three numbers giving the coeffici-
+
    rank0      - a single number giving the coefficient of T(0,0) in
−
                ents of T(1,1), T(1,0) and T(1,-1) in the spherical
+
                  the spherical tensor expansion.
−
                tensor expansion.
+
 +
    rank1      - a row vector with three numbers giving the coeffici-
 +
                  ents of T(1,1), T(1,0) and T(1,-1) in the spherical
 +
                  tensor expansion.
 +
 +
    rank2      - a row vector with five numbers giving the coeffici-
 +
                  ents of T(2,2), T(2,1), T(2,0), T(2,-1) and T(2,-2)
 +
                  in the spherical tensor expansion.
  
−
  rank2      - a row vector with five numbers giving the coeffici-
+
==Outputs==
−
                ents of T(2,2), T(2,1), T(2,0), T(2,-1) and T(2,-2)
 
−
                in the spherical tensor expansion.
 
  
−
See Table 1 in http://dx.doi.org/10.1016/0022-2364(77)90011-7 (note that minus signs are absorbed into the coefficients in Spinach).
+
    M          - 3x3 interaction tensor
 +
 
 +
==See also==
 +
[[irr_sph_ten.m]], [[pauli.m]], [[mat2sphten.m]], [[wigner.m]], [[stevens.m]]
 +
 
 +
 
 +
''Version 2.3, authors: [[Ilya Kuprov]]''

Revision as of 13:51, 27 December 2018

Converts the nine components of the irreducible spherical tensor representation of an interaction tensor into the Cartesian representation with a 3x3 matrix. The conventions are matched to Equation (18) of the paper by Len Mueller (http://dx.doi.org/10.1002/cmr.a.20224).

Spherical tensor components should be listed in the following order:

rank 0: (0,0)
rank 1: (1,1) (1,0) (1,-1)
rank 2: (2,2) (2,1) (2,0) (2,-1) (2,-2)

and should be supplied as coefficients in front of the corresponding irreducible spherical tensor operators returned by irr_sph_ten.m function.

Syntax

    M=sphten2mat(rank0,rank1,rank2)

Arguments

    rank0      - a single number giving the coefficient of T(0,0) in
                 the spherical tensor expansion.

    rank1      - a row vector with three numbers giving the coeffici-
                 ents of T(1,1), T(1,0) and T(1,-1) in the spherical
                 tensor expansion.

    rank2      - a row vector with five numbers giving the coeffici-
                 ents of T(2,2), T(2,1), T(2,0), T(2,-1) and T(2,-2)
                 in the spherical tensor expansion.

Outputs

    M          - 3x3 interaction tensor

See also

irr_sph_ten.m, pauli.m, mat2sphten.m, wigner.m, stevens.m


Version 2.3, authors: Ilya Kuprov