# Orientation.m

Anisotropic part of the Hamiltonian for a specific spin system orientation. Syntax:

                 H=orientation(Q,euler_angles)


Arguments:

  Q             -  irreducible components of the anisotropic
part, ordered by increasing spherical rank,
and within ranks by decreasing projection
quantum number - as returned by the
hamiltonian.m function.

euler_angles  -  a 1x3 vector or a vertical stack of 1x3
relative to the input orientation.


Output:

    H    -    anisotropic part of the Hamiltonian commutation
superoperator (or a cell array thereof) for the
specified Euler angles.


This function may be used in both Hilbert and Liouville space because the H -> [H, ] adjoint map is linear.

Version 1.9, authors: Ilya Kuprov