Take the 2-minute tour ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.

Recently, I am studying the online course Effective Field Theory provided by MIT OCW. Prof. Stewart gives a nice picture to summarize the effective theories:

Example Effective Field Theories derived from Quantum Field Theory

As a newbie in this field (I only have a knowledge of QFT on the level of Peskin & Schroeder's book), I am quite confused with so many terminologies. What do they stand for and Why do we need these different theories? Could someone explain this picture in depth (especially on their advantages and limitations)? Any help will be greatly appreciated.

share|improve this question
I'm hoping to start a book club for these lectures. If you would be interested in taking part please let me know at: meta.physics.stackexchange.com/questions/5560/… –  JeffDror Feb 28 '14 at 10:51
If you are interested we intend on watching the first 2 lectures by March 17th. We have a chat set up here: chat.stackexchange.com/rooms/13401/effective-field-theory –  JeffDror Mar 10 '14 at 1:21
@soliton: If you've made any progress in the course, you might be able to answer your own question. I think it will help many others :-) –  Siva Oct 21 '14 at 0:54

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.