138 citations · 613 across the 12 of their papers we have counts for
13 papers
Imprint of the black hole singularity on thermal two-point functions
Nima Afkhami-Jeddi, Simon Caron-Huot, Joydeep Chakravarty +1
We consider two-point functions of light fields at finite temperature and large real frequencies in holographic theories. The thermal system is dual to a single-sided AdS black hol…
Conformal Bootstrap Deformations
Nima Afkhami-Jeddi
We explore the space of extremal functionals in the conformal bootstrap. By recasting the bootstrap problem as a set of non-linear equations parameterized by the CFT data, we find…
Calabi-Yau CFTs and Random Matrices
Nima Afkhami-Jeddi, Anthony Ashmore, Clay Cordova
Using numerical methods for finding Ricci-flat metrics, we explore the spectrum of local operators in two-dimensional conformal field theories defined by sigma models on Calabi-Yau…
Free partition functions and an averaged holographic duality
Nima Afkhami-Jeddi, Henry Cohn, Thomas Hartman +1
We study the torus partition functions of free bosonic CFTs in two dimensions. Integrating over Narain moduli defines an ensemble-averaged free CFT. We calculate the averaged parti…
High-dimensional sphere packing and the modular bootstrap
Nima Afkhami-Jeddi, Henry Cohn, Thomas Hartman +2
We carry out a numerical study of the spinless modular bootstrap for conformal field theories with current algebra , or equivalently the linear programming bo…
Fast Conformal Bootstrap and Constraints on 3d Gravity
Nima Afkhami-Jeddi, Thomas Hartman, Amirhossein Tajdini
The crossing equations of a conformal field theory can be systematically truncated to a finite, closed system of polynomial equations. In certain cases, solutions of the truncated…
A Bound on Massive Higher Spin Particles
Nima Afkhami-Jeddi, Sandipan Kundu, Amirhossein Tajdini
According to common lore, massive elementary higher spin particles lead to inconsistencies when coupled to gravity. However, this scenario was not completely ruled out by previous…
A Conformal Collider for Holographic CFTs
Nima Afkhami-Jeddi, Sandipan Kundu, Amirhossein Tajdini
We develop a formalism to study the implications of causality on OPE coefficients in conformal field theories with large central charge and a sparse spectrum of higher spin operato…
Shockwaves from the Operator Product Expansion
Nima Afkhami-Jeddi, Thomas Hartman, Sandipan Kundu +1
We clarify and further explore the CFT dual of shockwave geometries in Anti-de Sitter. The shockwave is dual to a CFT state produced by a heavy local operator inserted at a complex…
Constraints on Higher Spin CFT
Nima Afkhami-Jeddi, Kale Colville, Thomas Hartman +2
We derive constraints on two-dimensional conformal field theories with higher spin symmetry due to unitarity, modular invariance, and causality. We focus on CFTs with $\mathcal{W}_…
Einstein gravity 3-point functions from conformal field theory
Nima Afkhami-Jeddi, Thomas Hartman, Sandipan Kundu +1
We study stress tensor correlation functions in four-dimensional conformal field theories with large and a sparse spectrum. Theories in this class are expected to have local ho…
Speed Limits for Entanglement
Thomas Hartman, Nima Afkhami-Jeddi
We show that in any relativistic system, entanglement entropy obeys a speed limit set by the entanglement in thermal equilibrium. The bound is derived from inequalities on relative…
Soft Graviton Theorem in Arbitrary Dimensions
Nima Afkhami-Jeddi
In this note we show that the recent conjecture proposed by Cachazo and Strominger holds at tree level in arbitrary dimensions. The proof makes crucial use of the fact that the sub…