What governs the coupling of acoustic phonons to transverse and longitudinal spinwaves? Is there a simple picture?

  • $\begingroup$ Do you mean like a simple quantum oscilator? $\endgroup$
    – Nikey Mike
    Jan 22, 2016 at 12:44
  • $\begingroup$ Can you be more precise? What do you mean by "what governs"? What do you know, what do you want to know? $\endgroup$
    – ACuriousMind
    Jan 22, 2016 at 13:50