A single magnetic moment evolving on the Bloch sphere under the Landau-Lifshitz-Gilbert-Slonczewski (LLGS) equation. \[ \frac{d\mathbf{m}}{dt} = -\frac{\mathbf{m} \times \mathbf{H}_\text{eff} + \alpha\,\mathbf{m} \times (\mathbf{m} \times \mathbf{H}_\text{eff})}{1+\alpha^2} + \frac{\tau_\text{ad}}{1+\alpha^2}\,\mathbf{m} \times \!\left(\mathbf{m} \times \hat{p}\right) \]