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Tree-Level Factorization Obstruction in Monopole Production
Hsing-Yi Lai, John Terning
We show that the tree-level amplitude for producing a monopole--antimonopole pair from an electrically charged pair cannot be constructed from the minimal one-photon couplings. Glu…
Non-invertible Chiral Symmetry and Axions under Electromagnetic Duality
Gongjun Choi, Tony Gherghetta, John Terning
We study the implications of non-invertible chiral symmetry in a four-dimensional U(1) gauge theory coupled to massless fermions with electromagnetic duality. Th…
Geometrizing the Anomaly
Joshua Newey, John Terning, Christopher B. Verhaaren
Recently a manifestly gauge invariant formalism for calculating amplitudes in quantum electrodynamics was outlined in which the field strength, rather than the gauge potential, is…
Schwinger vs Coleman: Magnetic Charge Renormalization
Joshua Newey, John Terning, Christopher B. Verhaaren
The kinetic mixing of two U(1) gauge theories can result in a massless photon that has perturbative couplings to both electric and magnetic charges. This framework can be used to p…
Abelian Instantons and Monopole Scattering
Csaba Csáki, Rotem Ovadia, Ofri Telem +2
It is usually assumed that instantons can only arise in non-Abelian theories. In this paper we re-examine this conventional wisdom by explicitly constructing instantons in an…
Partially Celestial States and Their Scattering Amplitudes
Csaba Csaki, Ofri Telem, John Terning
We study representations of the Poincaré group that have a privileged transformation law along a p-dimensional hyperplane, and uncover their associated spinor helicity variables in…
Dressed vs. Pairwise States, and the Geometric Phase of Monopoles and Charges
Csaba Csáki, Zi-Yu Dong, Ofri Telem +2
We construct the Faddeev-Kulish dressed multiparticle states of electrically and magnetically charged particles, incorporating the effects of real and virtual soft photons. We calc…
Monopoles Entangle Fermions
Csaba Csáki, Yuri Shirman, Ofri Telem +1
We resolve the decades old mystery of what happens when a positron scatters off a minimal GUT monopole in an s-wave, first discussed by Callan in 1983. Using the language of on-she…
Multi-particle Representations of the Poincaré Group
Csaba Csáki, Sungwoo Hong, Yuri Shirman +2
In this work we extend the definition of asymptotic multi-particle states of the -matrix, beyond the direct products of one-particle states. We identify new quantum numbers whic…
Spurious Poles in the Scattering of Electric and Magnetic Charges
John Terning, Christopher B. Verhaaren
Theories with both electric and magnetic charges ("mutually non-local" theories) have several major obstacles to calculating scattering amplitudes. Even when the interaction arises…
Scattering Amplitudes for Monopoles: Pairwise Little Group and Pairwise Helicity
Csaba Csaki, Sungwoo Hong, Yuri Shirman +3
On-shell methods are particularly suited for exploring the scattering of electrically and magnetically charged objects, for which there is no local and Lorentz invariant Lagrangian…
Chiral Gauge Theories on and SUSY Breaking
Jun Seok Lee, John Terning
We study SU(5) chiral gauge theories on . With an unequal number of fundamental and antifundmental matter representations we calculate nontrivial pre-ADS superpotent…
Resolving the Weinberg Paradox with Topology
John Terning, Christopher B. Verhaaren
Long ago Weinberg showed, from first principles, that the amplitude for a single photon exchange between an electric current and a magnetic current violates Lorentz invariance. The…
Dark Monopoles and SL(2,Z) Duality
John Terning, Christopher B. Verhaaren
We explore kinetic mixing between two Abelian gauge theories that have both electric and magnetic charges. When one of the photons becomes massive, novel effects arise in the low-e…
Pre-ADS Superpotential from Confined Monopoles
Csaba Csáki, Mario Martone, Yuri Shirman +1
According to the standard lore only single monopoles contribute to the superpotential on the Coulomb branch of 3D SUSY gauge theories. However we argue that multi-…
Landscaping the Strong CP Problem
Nemanja Kaloper, John Terning
One often hears that the strong problem is the one problem which cannot be solved by anthropic reasoning. We argue that this is not so. Due to nonperturbative dynamics, states…
Twisted Sisters: KK Monopoles and their Zero Modes
Csaba Csaki, Yuri Shirman, John Terning +1
We find the conditions for the existence of fermionic zero modes of the fundamental representation in the background of a Kaluza-Klein (KK) monopole. We show that while there is no…
Marginal Breaking of Conformal SUSY QCD
Kevin F. Cleary, John Terning
We provide an example of a 4D theory that exhibits the Contino-Pomarol-Rattazzi mechanism, where breaking conformal symmetry by an almost marginal operator leads to a light pseudo-…
S-Duality and Helicity Amplitudes
Kitran Colwell, John Terning
We examine interacting Abelian theories at low energies and show that holomorphically normalized photon helicity amplitudes transform into dual amplitudes under SL(2,Z) as modular…
Dynamics of 3D SUSY Gauge Theories with Antisymmetric Matter
Csaba Csáki, Mario Martone, Yuri Shirman +2
We investigate the IR dynamics of N=2 SUSY gauge theories in 3D with antisymmetric matter. The presence of the antisymmetric fields leads to further splitting of the Coulomb branch…
Inflation from Broken Scale Invariance
Csaba Csaki, Nemanja Kaloper, Javi Serra +1
We construct a model of inflation based on a low-energy effective theory of spontaneously broken global scale invariance. This provides a shift symmetry that protects the inflaton…
A Naturally Light Dilaton and a Small Cosmological Constant
B. Bellazzini, C. Csaki, J. Hubisz +2
We present a non-supersymmetric theory with a naturally light dilaton. It is based on a 5D holographic description of a conformal theory perturbed by a close-to-marginal operator o…
Supersymmetry Breaking Triggered by Monopoles
Csaba Csaki, David Curtin, Vikram Rentala +2
We investigate N = 1 supersymmetric gauge theories where monopole condensation triggers supersymmetry breaking in a metastable vacuum. The low-energy effective theory is an O'Raife…
Anomaly Constraints on Monopoles and Dyons
Csaba Csaki, John Terning, Yuri Shirman
Fermions with magnetic charges can contribute to anomalies. We derive the axial anomaly and gauge anomalies for monopoles and dyons, and find eight new gauge anomaly cancelation co…