43 citations · 90 across the 8 of their papers we have counts for
8 papers
Auxiliary Field Deformations of (Semi-)Symmetric Space Sigma Models
Daniele Bielli, Christian Ferko, Liam Smith +1
We generalize the auxiliary field deformations of the principal chiral model (PCM) introduced in arXiv:2405.05899 and arXiv:2407.16338 to sigma models whose target manifolds are sy…
Integrable Higher-Spin Deformations of Sigma Models from Auxiliary Fields
Daniele Bielli, Christian Ferko, Liam Smith +1
We construct a new infinite family of integrable deformations of the principal chiral model (PCM) parameterized by an interaction function of several variables, which extends the f…
T-Duality and -like Deformations of Sigma Models
Daniele Bielli, Christian Ferko, Liam Smith +1
We initiate the study of the interplay between T-duality and classical stress tensor deformations in two-dimensional sigma models. We first show that a general Abelian T-duality co…
Auxiliary Field Sigma Models and Yang-Baxter Deformations
Daniele Bielli, Christian Ferko, Liam Smith +1
We combine the Yang-Baxter (YB) and bi-Yang-Baxter (bi-YB) deformations with higher-spin auxiliary field deformations to construct multi-parameter families of integrable deformatio…
Infinite Family of Integrable Sigma Models Using Auxiliary Fields
Christian Ferko, Liam Smith
We introduce a class of sigma models which are parameterized by a function of one variable. In addition to the physical field , these models include an auxiliary field $v_α…
Duality-Invariant Non-linear Electrodynamics and Stress Tensor Flows
Christian Ferko, Sergei M. Kuzenko, Liam Smith +1
Given a model for self-dual non-linear electrodynamics in four spacetime dimensions, any deformation of this theory which is constructed from the duality-invariant energy-momentum…
Stress Tensor Flows, Birefringence in Non-Linear Electrodynamics, and Supersymmetry
Christian Ferko, Liam Smith, Gabriele Tartaglino-Mazzucchelli
We identify the unique stress tensor deformation which preserves zero-birefringence conditions in non-linear electrodynamics, which is a version of the opera…
On Current-Squared Flows and ModMax Theories
Christian Ferko, Liam Smith, Gabriele Tartaglino-Mazzucchelli
We show that the recently introduced ModMax theory of electrodynamics and its Born-Infeld-like generalization are related by a flow equation driven by a quadratic combination of st…