Speaker
Iason Vakondios
Description
We investigate multicritical points in O(N) symmetric scalar field theories in various dimensions. Using functional renormalisation to leading order in a derivative expansion, we find analytical and numerical results for critical and multi-critical points. In the large-N limit, we investigate local and global fixed points, and the availability of lines of fixed points analogous to the BMB phenomenon for tri-critical theories in 3D. For suitable choices of the regularisation, we find analytic results for the critical potential, and demonstrate that the spectrum of eigenperturbations is given in terms of generalised Laguerre polynomials.
| Affiliation | University of Sussex, University of Patras |
|---|---|
| Career status | PhD student |
Authors
Daniel Litim
(University of Sussex)
Iason Vakondios