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Physics

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  • $\begingroup$ "choosing a renormalization scale close to the physical momenta of your scattering problem renders the loop corrections to $\Gamma^{4}$ small" Does that mean that RG also help with calculating amplitudes, along with exploring how coupling constants change over time ? $\endgroup$ Commented May 10 at 1:32
  • $\begingroup$ Yes, the RG can be used to make calculations more accurate by moving coupling constants to a more appropriate scale. $\endgroup$ Commented May 10 at 3:25
  • $\begingroup$ My current interpretation is that not all of the renormalization conditions reflect the same physics, but by using the RGE, we can track a set of renormalization condition that represent the same physics, and that's called RG flow. Is that correct ? $\endgroup$ Commented May 10 at 4:39
  • $\begingroup$ Well as long as you stay within the same RG flow you're in the same theory. I think you get it. $\endgroup$ Commented May 10 at 5:17