Show that the spatial field operators (r) and (r) defined in (4.5.1) have commutation relations
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Show that the spatial field operators ψ(r) and ψ†(r) defined in (4.5.1) have commutation relations similar to those of the momentum state operators, that is,
You will need the identity
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[(r), ¹ (r)] = 8(r — r'). (4.5.7)
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By definition r k eikr L ak and ut k eikr I 4...View the full answer
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