84 citations · 543 across the 20 of their papers we have counts for
20 papers
Beyond Strong Subadditivity: Holographic Entropy Inequalities Along Renormalization Group Flows
Ning Bao, Christian Ferko
Strong subadditivity (SSA) on a common light cone gives the Casini-Huerta entropic proof of the three-dimensional -theorem. We ask whether holographic entropy inequalities beyon…
Quantization of the ModMax Oscillator
Christian Ferko, Alisha Gupta, Eashan Iyer
We quantize the ModMax oscillator, which is the dimensional reduction of the Modified Maxwell theory to one spacetime dimension. We show that the propagator of the ModMax oscillato…
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…
ModMax Oscillators and Root--Like Flows in Supersymmetric Quantum Mechanics
Christian Ferko, Alisha Gupta
We construct a deformation of any -dimensional theory of bosons with symmetry which is driven by a function of conserved quantities that resembles the root-$T \o…
Root- Deformed Boundary Conditions in Holography
Stephen Ebert, Christian Ferko, Zhengdi Sun
We develop the holographic dictionary for pure gravity where the Lagrangian of the dual conformal field theory has been deformed by an arbitrary function of t…
-Like Flows and Nonlinear Supersymmetry
Christian Ferko, Yangrui Hu, Zejun Huang +2
We show that the Born-Infeld theory can be generated via an irrelevant deformation of the free Maxwell theory. The deforming operator is constructed from the energy-momentum t…
Holography and Irrelevant Operators
Chih-Kai Chang, Christian Ferko, Savdeep Sethi
We explore the holographic proposal involving spacetimes with linear dilaton asymptotics in three dimensions from a gravity perspective. The holographic dual shares some properties…
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 the Classical Integrability of Root- Flows
Riccardo Borsato, Christian Ferko, Alessandro Sfondrini
The Root- flow was recently introduced as a universal and classically marginal deformation of any two-dimensional translation-invariant field theory. The flow commu…
Sequential Flows by Irrelevant Operators
Christian Ferko, Savdeep Sethi
We explore whether one can deform a collection of theories that are already -deformed. This allows us to define classes of irrelevant deformations…
in JT Gravity and BF Gauge Theory
Stephen Ebert, Christian Ferko, Hao-Yu Sun +1
JT gravity has a first-order formulation as a two-dimensional BF theory, which can be viewed as the dimensional reduction of the Chern-Simons description of gravity. We consid…
Deformations of Supersymmetric Quantum Mechanics
Stephen Ebert, Christian Ferko, Hao-Yu Sun +1
We define a manifestly supersymmetric version of the deformation appropriate for a class of -dimensional theories with or $\mathcal{N} = 2…
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…
Supersymmetry and Irrelevant Deformations
Christian Ferko
The operator provides a universal irrelevant deformation of two-dimensional quantum field theories with remarkable properties, including connections to both string…
Gravitational Memory and Compact Extra Dimensions
Christian Ferko, Gautam Satishchandran, Savdeep Sethi
We develop a general formalism for treating radiative degrees of freedom near in theories with an arbitrary Ricci-flat internal space. These radiative modes are e…
Defining the Deformation on
T. Daniel Brennan, Christian Ferko, Emil Martinec +1
We show that the deformation of two-dimensional quantum field theory on is well-defined and solvable at the quantum level. Flow equations for the…
A Non-Abelian Analogue of DBI from
T. Daniel Brennan, Christian Ferko, Savdeep Sethi
The Dirac action describes the physics of the Nambu-Goldstone scalars found on branes. The Born-Infeld action defines a non-linear theory of electrodynamics. The combined Dirac-Bor…
Non-Linear Supersymmetry and -like Flows
Christian Ferko, Hongliang Jiang, Savdeep Sethi +1
The deformation of a supersymmetric two-dimensional theory preserves the original supersymmetry. Moreover, in several interesting cases the deformed theory possesses add…
Flows and (2,2) Supersymmetry
Chih-Kai Chang, Christian Ferko, Savdeep Sethi +2
We construct a solvable deformation of two-dimensional theories with supersymmetry using an irrelevant operator which is a bilinear in the supercurrents. This supercurrent-…
Supersymmetry and Deformations
Chih-Kai Chang, Christian Ferko, Savdeep Sethi
We propose a manifestly supersymmetric generalization of the solvable deformation of two-dimensional field theories. For theories with and supersym…