7 citations · 12 across the 2 of their papers we have counts for
3 papers
hep-th2016★ 5 cited
Soft symmetry improvement of two particle irreducible effective actions
Michael J. Brown, Ian B. Whittingham
Two particle irreducible effective actions (2PIEAs) are valuable non-perturbative techniques in quantum field theory; however, finite truncations of them violate the Ward identitie…
hep-th2016
Linear Response Theory for Symmetry Improved Two Particle Irreducible Effective Actions
Michael J. Brown, Ian B. Whittingham, Daniel S. Kosov
We investigate the linear response of an O(N) scalar quantum field theory subject to external perturbations using the symmetry improved two particle irreducible effective action fo…
hep-th2015★ 7 cited
Symmetry improvement of 3PI effective actions for O(N) scalar field theory
Michael J. Brown, Ian B. Whittingham
[Abridged] n-Particle Irreducible Effective Actions (PIEA) are a powerful tool for extracting non-perturbative and non-equilibrium physics from quantum field theories. Unfortuna…