- #1
oswaler
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Homework Statement
Prove:
[σ⋅(p-qA)]²=(p-qA)²-q[tex]\bar{h}[/tex]σ⋅B
where B=∇×A , p=i[tex]\bar{h}[/tex]∇ and q is constant
Homework Equations
The Attempt at a Solution
if the x component is: px-qAx
and the y component is py-qAy
Then the x and y components shouldn't commute [px-qAx,py-qAy] <>0. This is where the extra term q[tex]\bar{h}[/tex]σ⋅B comes from.
However, it seems that these values do commute:
(px-qAx)(py-qAy)-(py-qAy)(px-qAx)=0
Am I missing something here that would cause these values not to commute?