5 papers
The classical Yangian symmetry of Auxiliary Field Sigma Models
Daniele Bielli, Christian Ferko, Michele Galli +1
Integrable field theories exhibit infinitely many symmetries which underlie their solvability, but the structure of these symmetries can become obscured after performing an integra…
Superform Approach to Equivariant Localization in Supergravity
Michele Galli, Christian Kennedy, Parth Raina +1
We identify a superspace mechanism behind equivariant localization in supergravity. We show that closed superforms generate, on supersymmetric backgrounds, equivariantly closed pol…
Relating auxiliary field formulations of duality-invariant and integrable field theories
Nicola Baglioni, Daniele Bielli, Michele Galli +1
Auxiliary field techniques have recently gained interest in four-dimensional non-linear electrodynamics and two-dimensional integrable sigma models. In these settings, coupling a s…
Soliton Surfaces and the Geometry of Integrable Deformations of the Model
Christian Ferko, Michele Galli, Zejun Huang +1
The model is an analytically tractable quantum field theory which shares several properties with Yang-Mills theory. By virtue of its classical integra…
Higher-Spin Currents and Flows in Auxiliary Field Sigma Models
Daniele Bielli, Christian Ferko, Michele Galli +1
We study local, higher-spin conserved currents in integrable sigma models that have been deformed via coupling to auxiliary fields. These currents generate integrability-prese…