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--- advanced_tools:renormalization_group [2018/04/09 06:42]
ronaldwilliams
+++ advanced_tools:renormalization_group [2018/04/09 06:42]
ronaldwilliams [Intuitive]
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-**[Y]ou are arranging the theory in such a way that only the right degrees of freedom, the ones that are really relevant to you, are appearing in your equations. I think that this is in the end what the renormalization group is all about.** It's a way of satisfying the Third Law of Progress in Theoretical Physics, which is that //you may use any degrees of freedom you like to describe a physical system, but if you use the wrong ones, you'll be sorry//.
+You are arranging the theory in such a way that only the right degrees of freedom, the ones that are really relevant to you, are appearing in your equations. I think that this is in the end what the renormalization group is all about. It's a way of satisfying the Third Law of Progress in Theoretical Physics, which is that //you may use any degrees of freedom you like to describe a physical system, but if you use the wrong ones, you'll be sorry//.
 <cite>[[https://www.physics.ohio-state.edu/~ntg/8805/refs/weinberg_rg_good_thing.pdf|Why the Renormalization Group Is a Good Thing]] by Steven Weinberg</cite>