Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I would like to know of good pedagogic references to learn about the notion of "defects" in TFTs and CFTs. I am specially interested in 3+1 TFTs (.and probably about their relation to 2+1 CFTs..)

In the same strain I would like to know of references which explain whatever is known about being able to translate defects and any other such non-local structures for TFTs into CFTs in one lower dimension. I guess such a dictionary exists and I would like to know of references about it, especially for 3+1 TFTs and their "related" 2+1 CFTs.

(..I guess there is some intuition about defects in TFTs being writable as boundary condition changing operators in CFTs in lower would be great if someone can provide some references in that direction..)

share|cite|improve this question

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.