Vacuum stability of asymptotically safe Gauge-Yukawa theories

Preprint number: CP3-Origins-2014-49 DNRF90 and DIAS-2014-49
Authors: Daniel Litim (Dept. of Physics and Astronomy, U Sussex), Matin Mojaza (Nordita), and Francesco Sannino (CP3-Origins & DIAS)
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We study the phase diagram and the vacuum stability of certain 4D gauge-Yukawa theories whose high-energy behaviour is characterised by an interacting fixed point. We provide analytical and numerical results for the running coupling and the re- summed Coleman-Weinberg effective potential to establish classical and quantum stability of the vacuum. Implications of our findings for theories with interacting UV fixed points are indicated.