Speaker
Piero Beretta
(Facultad de Ingeniería. Universidad de la República)
Description
The novel functional dimensional regularization (FDR) scheme has proven capable of yielding results that are competitive with the state-of-the-art in the computation of critical exponents in $d=3$, while also reproducing those from the $\varepsilon$-expansion for the Ising and other universality classes. In this work, we show that this is not a mere coincidence: by applying the scheme to the $O(N)$ universality class, we explicitly derive the flow equations and obtain critical exponents that are comparable to those obtained with higher-order non-perturbative approaches. In this case, FDR retains the features already highlighted in previous works -- namely, its efficiency and rapid convergence.
| Affiliation | Universidad de la República, Instituto de Física, Facultad de Ingeniería |
|---|---|
| Link to paper | https://arxiv.org/pdf/2604.26207 |
| Career status | PhD student |
Authors
Alessandro Codello
(Ca' Foscari)
Piero Beretta
(Facultad de Ingeniería. Universidad de la República)