Evaluate the following integral \(\int_{-\infty}^{\infty} d\omega \delta(\omega^2 - \vec{k}^2 - m^2) \theta(\omega)\)
Added by Lourdes W.
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So we have: x = u√(R^2 - m^2) Now, let's differentiate both sides of the equation with respect to u: dx/du = √(R^2 - m^2) Show more…
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