Why don't we usually calculate scattering cross sections for Compton scattering of photons (gamma rays) off protons? After all both electrons and protons are fermions. Hence shouldn't the amplitude be identical for both type of scattering?
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I have an hydrogenic atom, knowing that its ground-state wavefunction has the standard form $$ \psi = A e^{-\beta r} $$ with $A = \frac{\bet...
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I want to know what happens to the space a black hole crosses over as our galaxy travels through space.
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