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A few supergravity solutions representing configurations of NS5-branes admit exact conformal field theory (CFT) description. Deformations of these solutions should be described by exactly marginal operators of the corresponding theories. We…

High Energy Physics - Theory · Physics 2014-11-20 A. Fotopoulos , P. M. Petropoulos , N. Prezas , K. Sfetsos

We study the holographic dual of a topological symmetry operator in the context of the AdS/CFT correspondence. Symmetry operators arise from topological field theories localized on a subspace of the boundary CFT spacetime. We use bottom up…

High Energy Physics - Theory · Physics 2024-10-23 Jonathan J. Heckman , Max Hübner , Chitraang Murdia

We consider several aspects of unitary higher-dimensional conformal field theories (CFTs). We first study massive deformations that trigger a flow to a gapped phase. Deep inelastic scattering in the gapped phase leads to a convexity…

High Energy Physics - Theory · Physics 2015-06-12 Zohar Komargodski , Alexander Zhiboedov

We consider the tree-level scattering of massless particles in $(d+2)$-dimensional asymptotically flat spacetimes. The $\mathcal{S}$-matrix elements are recast as correlation functions of local operators living on a space-like cut…

High Energy Physics - Theory · Physics 2018-07-04 Daniel Kapec , Prahar Mitra

Correlators in symmetric orbifold CFTs are given by a finite sum of admissible branched covers of the 2d spacetime. We consider a Gross-Mende like limit where all operators have large twist, and show that the corresponding branched covers…

High Energy Physics - Theory · Physics 2021-05-26 Matthias R. Gaberdiel , Rajesh Gopakumar , Bob Knighton , Pronobesh Maity

We compute the celestial correlators corresponding to tree-level 5-gluon amplitudes in the type I superstring theory. Since celestial correlation functions are obtained by integrating over the full range of energies, there is no obvious…

High Energy Physics - Theory · Physics 2024-06-04 Lina Castiblanco , Gaston Giribet , Gabriel Marin , Francisco Rojas

We present a collection of numerical bootstrap computations for 3d CFTs with a U(1) global symmetry. We test the accuracy of our method and fix conventions through a computation of bounds on the OPE coefficients for low-lying operators in…

High Energy Physics - Theory · Physics 2025-04-28 Samuel Bartlett-Tisdall , Christopher P. Herzog , Vladimir Schaub

We derive forms of light-state dominance for correlators in CFT$_d$, making precise the sense in which correlators can be approximated by the contribution of light operator exchanges. Our main result is that the four-point function of…

High Energy Physics - Theory · Physics 2019-08-13 Per Kraus , Allic Sivaramakrishnan

The bulk-to-boundary dictionary for 4D celestial holography is given a new entry defining 2D boundary states living on oriented circles on the celestial sphere. The states are constructed using the 2D CFT state-operator correspondence from…

High Energy Physics - Theory · Physics 2021-10-04 Erin Crawley , Noah Miller , Sruthi A. Narayanan , Andrew Strominger

Symmetry Theories (SymThs) provide a flexible framework for analyzing the global categorical symmetries of a $D$-dimensional QFT$_{D}$ in terms of a $(D+1)$-dimensional bulk system SymTh$_{D+1}$. In QFTs realized via local string…

High Energy Physics - Theory · Physics 2025-02-04 Jonathan J. Heckman , Max Hübner

We compute the four-point correlator of two gluon light-ray operators and two gluon primaries from the four-gluon celestial amplitude in $(2,2)$ signature spacetime. The correlator is non-distributional and allows us to verify that…

High Energy Physics - Theory · Physics 2022-08-10 Yangrui Hu , Luke Lippstreu , Marcus Spradlin , Akshay Yelleshpur Srikant , Anastasia Volovich

To O(1/N) we derive, purely from CFT data, the bulk equations of motion for interacting scalar fields and for scalars coupled to gauge fields and gravity. We first uplift CFT operators to mimic local AdS fields by imposing bulk…

High Energy Physics - Theory · Physics 2015-07-29 Daniel Kabat , Gilad Lifschytz

We provide a procedure to determine if a given nonlocal operator in a large N holographic CFT is dual to a local bulk operator on the geometry associated with a particular code subspace of the CFT. This procedure does not presuppose…

High Energy Physics - Theory · Physics 2017-07-19 Fabio Sanches , Sean J. Weinberg

We consider the holographic computation of two dimensional conformal field theory partition functions on non-orientable surfaces. We classify the three dimensional geometries that give bulk saddle point contributions to the partition…

High Energy Physics - Theory · Physics 2016-09-07 Alexander Maloney , Simon F. Ross

We study exactly marginal deformations of 3d $\mathcal{N}=2$ CFTs dual to AdS$_4$ solutions in eleven-dimensional supergravity using generalised geometry. Focussing on Sasaki-Einstein backgrounds, we find that marginal deformations…

High Energy Physics - Theory · Physics 2018-12-26 Anthony Ashmore

We study two-dimensional conformal field theories (CFTs) with boundaries via the conformal bootstrap. We derive a positive semi-definite program from crossing symmetry of three observables: the annulus partition function, the two-point…

High Energy Physics - Theory · Physics 2025-06-24 Marco Meineri , Bharathkumar Radhakrishnan

We obtain infinitely many boundary operators in the Brownian loop soup in the subcritical phase by analyzing the conformal block expansion of the two-point function that computes the probability of having two marked points on the upper…

Mathematical Physics · Physics 2026-01-07 Federico Camia , Rongvoram Nivesvivat

We consider Lorentzian CFT Wightman functions in momentum space. In particular, we derive a set of reference formulas for computing two- and three-point functions, restricting our attention to three-point functions where the middle operator…

High Energy Physics - Theory · Physics 2020-12-08 Nikhil Anand , Zuhair U. Khandker , Matthew T. Walters

We consider a class of 6D superconformal field theories (SCFTs) which have a large $N$ limit and a semi-classical gravity dual description. Using the quiver-like structure of 6D SCFTs we study a subsector of operators protected from large…

High Energy Physics - Theory · Physics 2020-11-19 Jonathan J. Heckman

We consider possible conformal field theory (CFT) descriptions of the various inertial ranges that exist in $2d$ duality invariant Magnetohydrodynamics. Such models arise as effective theories of dyonic plasmas in 3 dimensions in which all…

High Energy Physics - Theory · Physics 2009-10-30 O. Coceal , W. A. Sabra , S. Thomas