Jul 26 – 30, 2021
US/Eastern timezone

Investigating the conformal behaviour of $\mathrm{SU}(2)$ with one adjoint Dirac flavor

Jul 30, 2021, 6:45 AM
15m
Oral presentation Particle physics beyond the Standard Model Particle physics beyond the Standard Model

Speaker

Ed Bennett (Swansea University)

Description

Motivated by recent scenarios of exotic infrared behaviour and by earlier lattice findings, we present results for the $\mathrm{SU}(2)$ gauge theory with one Dirac flavor in the adjoint representation. This provides a major update on our previous investigation of this theory, including data for four values of the gauge coupling $\beta$, and for smaller masses and larger volumes than previously considered. Results for the particle spectrum, topological observables, and the anomalous dimension from both hyperscaling and the Dirac mode number are presented. At the finest coupling, we observe a large mass anomalous dimension of $\gamma_*$ ≳ $0.6$. Our findings are analysed in relation to possible infrared behaviours of the model. In particular, we show that our results are not compatible with a confining scenario in which chiral symmetry is broken.

Primary authors

Presentation materials