i ∂ t φ = [ 1 2 m ( p _ − e A _ ) 2 − e 2 m σ _ . B _ + e ϕ ] φ {\displaystyle i{{\partial }_{t}}\varphi =\left[{\frac {1}{2m}}{{\left({\underline {p}}-e{\underline {A}}\right)}^{2}}-{\frac {e}{2m}}{\underline {\sigma }}.{\underline {B}}+e\phi \right]\varphi }
![{\displaystyle i{{\partial }_{t}}\varphi =\left[{\frac {1}{2m}}{{\left({\underline {p}}-e{\underline {A}}\right)}^{2}}-{\frac {e}{2m}}{\underline {\sigma }}.{\underline {B}}+e\phi \right]\varphi }](https://wikimedia.org/api/rest_v1/media/math/render/svg/a0ec868429730ead474c06a8394eb044f8ec9679)