Tagged Questions
3
votes
1answer
108 views
What does it mean to renormalize an effective field theory?
This is in reference to slide 19 here http://cosmology.lbl.gov/talks/Pajer_13.pdf
"As always in Effective Field Theory, the theory becomes predictive when there are more observables than parameters"
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1
vote
0answers
60 views
Wilsonian vs 1PI
As a follow up to Difference between 1PI effective action and Wilsonian effective action, where can I find pedagogical material that highlights the similarities and differences between the 1PI and ...
17
votes
3answers
1k views
A pedestrian explanation of Renormalization Groups - from QED to classical field theories
shortly after the invention of quantum electrodynamics, one discovered that the theory had some very bad properties. It took twenty years to discover that certain infinities could be overcome by a ...
