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20202026
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hep-th2026

Observables in Schrödinger CFTs: How Aliens Built the Pyramids

Mathieu Boisvert, Shehab Hossam Fadda, Justin Kulp +1

We discuss the algebraic structure of observables in Schrödinger CFTs. These operators have zero mass (or particle number) and generically transform in staggered ''pyramid represen…

hep-th2026

Mirror symmetry on a circle

Siqi Chen, Shehab Hossam Fadda, Matteo Sacchi

We investigate the small circle, or high temperature, limit of the supersymmetric index identities for the three-dimensional abelian mirror symmetry of SQED. There exist two possib…

hep-th2025

Revisiting Schrödinger CFTs: Factorization, Massless Particles, and a Path to the Bootstrap

Mathieu Boisvert, Shehab Hossam Fadda, Justin Kulp +1

We revisit Schrödinger CFTs from a modern point of view. We introduce the ''harmonic trap geometry,'' analogous to the cylinder picture in relativistic CFTs, and demonstrate a stat…

hep-th2025

Cardy limit of the 3d superconformal index

Arash Arabi Ardehali, Mathieu Boisvert, Shehab Hossam Fadda

We study the superconformal index of 3d gauge theories in Cardy-like limits , extending techniques recently developed in the 4d…

hep-th2020

Two Dimensional Conformal Field Theory from Soft Quantum Electrodynamics in Four Dimensions

Shehab Fadda, Shin'ichi Nojiri

In this work, we propose an effective action of the two-dimensional conformal field theory for the Soft modes appearing in Quantum ElectroDynamics (QED) in 4 dimensions. This is mo…