2 papers
hep-th2025
Higher Derivative Sigma Models
John F. Donoghue, Gabriel Menezes
We explore the nature of running couplings in the higher derivative linear and nonlinear sigma models and show that the results in dimensional regularization for the physical runni…
hep-th2024
Amplitudes and Renormalization Group Techniques: A Case Study
Diego Buccio, John F. Donoghue, Roberto Percacci
We explore the properties of a simple renormalizable shift symmetric model with a higher derivative kinetic energy and quartic derivative coupling, that can serve as a toy model fo…