7 papers
The auxiliary-deformed Breitenlohner-Maison model: duality frames and higher-dimensional origin
Daniele Bielli, Mattia Cesà ro
The two-dimensional Breitenlohner-Maison (BM) model is a classically integrable subsector of general relativity endowed with two commuting Killing isometries, obtained via Ka…
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…
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…
Boundary Bethe ansatz in massive
Daniele Bielli, Vasileios Moustakis, Alessandro Torrielli
In this paper we perform the boundary algebraic Bethe Ansatz for massive representations of the integrable system. This is a companion analysis to our…
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…
Boundary Bethe ansatz in massless AdS3
Daniele Bielli, Vasileios Moustakis, Alessandro Torrielli
We construct the boundary algebraic Bethe Ansatz for the AdS3 X S3 X T4 integrable reflection problem restricted to the massless sector. We derive the double-row monodromy and find…