5 papers
QCD with an Infrared Fixed Point and a Dilaton
Roman Zwicky
Following previous work we further explore the possibility that the chirally broken phase of gauge theories admits an infrared fixed point interpretation. The slope of the fun…
Dilaton Physics from Asymptotic Freedom
Charlie Cresswell-Hogg, Daniel F. Litim, Roman Zwicky
The dilaton is investigated from first principles in an asymptotically free Gross-Neveu-Yukawa theory in three dimensions. In the limit of many fermion flavours, the theory feature…
Model-independent results on parity violation in the trace anomaly
Rémy Larue, Jérémie Quevillon, Roman Zwicky
Anomalous parity violation in four dimensions would be significant for phenomenology (baryogenesis, gravitational waves) and mathematical physics. Over the past decade, there has b…
Trace Anomaly of Weyl Fermions via the Path Integral
Rémy Larue, Jérémie Quevillon, Roman Zwicky
We compute the trace, diffeomorphism and Lorentz anomalies of a free Weyl fermion in a gravitational background field by path integral methods. This is achieved by regularising the…
Gravity-gauge Anomaly Constraints on the Energy-momentum Tensor
Rémy Larue, Jérémie Quevillon, Roman Zwicky
We derive constraints on the four dimensional energy-momentum tensor from gravitational and gauge anomalies. Our work can be considered an extension of Duff's analysis [1] to inclu…