Monday, October 21, 2019

quantum field theory - Doing a Gaussian Integral



When you integrate over p you get:


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by using


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What are the steps to this? Do you integrate by parts?.




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...