\(\vec P_\omega\) can be time-independent.
Regarding the discussion in Pictures, we know immediately that \(\vec H\) is aligned or anti-aligned with \(\vec P_\omega\) since
as \(\vec P_\omega\) is time-independent.
Anyway the equation we need to solve is then
Without solving the equation, we know that
What is special in this model?
To be added.
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