High Energy Theory Group Meeting: The epsilon expansion: back to the future

Mathijs Hogervorst, EPFL

24 December 2020, 13:30 
Zoom: https://us02web.zoom.us/j/83037428657?pwd=Z3hubVhmbEtUYXNDajY1R2pTaWpHdz09 
High Energy Theory Group Meeting

Zoom: https://us02web.zoom.us/j/83037428657?pwd=Z3hubVhmbEtUYXNDajY1R2pTaWpHdz09



The epsilon expansion is a standard trick in quantum field theory to construct weakly-coupled RG fixed points. Nevertheless, little is known about the landscape of theories it describes, beyond some well-known CFTs like the Ising and the O(N) models. In this talk we revisit the problem of classifying multiscalar fixed points, in the process proving new results about their spectra. Moreover, we show that there is no weakly-coupled gauged fixed point with fewer than 183 flavors.



Seminar Organizer: Andrea Guerrieri



Tel Aviv University makes every effort to respect copyright. If you own copyright to the content contained here and / or the use of such content is in your opinion infringing, Contact us as soon as possible >>
Tel Aviv University, P.O. Box 39040, Tel Aviv 6997801, Israel
UI/UX Basch_Interactive