Tuesday, February 26, 2019

quantum mechanics - What parameters determine the amount of Uehling potential and self-energy correction effects?


Uehling potential correction and electron self-energy correction are the two most important factors contributing to the lamb shift in the hydrogen atom, by "smearing" the wavefunction of the electron. What parameter(s) determine "how much" this smearing of the wavefunction is?




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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 \...