Speaker
Dr
Domenico Orlando
(INFN Torino)
Description
The large-charge expansion is very effective in extract physical information also for systems that have an alternative perturbative expansion.
I will show how to use it to derive the leading-N effective potential for the O(N) vector model without using Feynman diagrams and I will use its convexity properties to discuss the consistency of different possible phases in various dimensions.
Primary author
Dr
Domenico Orlando
(INFN Torino)
