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Problem 5-3b Hint. where I’ve let ħ, c =1. †. †. . i. Recalling that is a function of k ,. it should be primed when k is. Again, I’ve adopted the ħ , c = 1. You should be able to rewrite the left-hand side of in the form:.
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Problem 5-3b Hint where I’ve let ħ,c=1. † † i Recalling that is a function of k, it should be primed whenk is. Again, I’ve adopted the ħ,c = 1. You should be able to rewrite the left-hand side of in the form: You will need to take the Fourier transform of both sides: d3re-iK·r d3re-iK·r e-ik·r I’ve already cancelled 1/(2p)3 from both sides Integrating over d3r introduces a delta function that simplifies the integration over d3k Next do yet ANOTHER Fourier transform: d3r'eiK'·r' d3r'e-iK'·r' e-ik·r Again already canceling 1/(2p)3 from both sides You should be able to take it from here, completing the arguments to show †