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View article: Carrollian partition function for bulk Yang-Mills theory
Carrollian partition function for bulk Yang-Mills theory Open
A bstract The path integral over massless quantum fields in Minkowski space with scattering boundary conditions defines a Carrollian partition function on the null boundary. We develop this framework for non-Abelian gauge theory, both from…
View article: Codimension one defects in free scalar field theory
Codimension one defects in free scalar field theory Open
A bstract We study various aspects of codimension one defects in free scalar field theory, with particular emphasis on line defects in two-dimensions. These defects are generically non-conformal, but include conformal and topological defec…
View article: Carrollian Partition Function for Bulk Yang-Mills Theory
Carrollian Partition Function for Bulk Yang-Mills Theory Open
The path integral over massless quantum fields in Minkowski space with scattering boundary conditions defines a Carrollian partition function on the null boundary. We develop this framework for non-Abelian gauge theory, both from a general…
View article: Codimension one defects in free scalar field theory
Codimension one defects in free scalar field theory Open
We study various aspects of codimension one defects in free scalar field theory, with particular emphasis on line defects in two-dimensions. These defects are generically non-conformal, but include conformal and topological defects as spec…
View article: Carrollian partition functions and the flat limit of AdS
Carrollian partition functions and the flat limit of AdS Open
A bstract The formulation of the S-matrix as a path integral with specified asymptotic boundary conditions naturally leads to the realization of a Carrollian partition function defined on the boundary of Minkowski space. This partition fun…
View article: Carrollian Partition Functions and the Flat Limit of AdS
Carrollian Partition Functions and the Flat Limit of AdS Open
The formulation of the S-matrix as a path integral with specified asymptotic boundary conditions naturally leads to the realization of a Carrollian partition function defined on the boundary of Minkowski space. This partition function, spe…
View article: S-matrix path integral approach to symmetries and soft theorems
S-matrix path integral approach to symmetries and soft theorems Open
A bstract We explore a formulation of the S-matrix in terms of the path integral with specified asymptotic data, as originally proposed by Arefeva, Faddeev, and Slavnov. In the tree approximation the S-matrix is equal to the exponential of…
View article: S-Matrix Path Integral Approach to Symmetries and Soft Theorems
S-Matrix Path Integral Approach to Symmetries and Soft Theorems Open
We explore a formulation of the S-matrix in terms of the path integral with specified asymptotic data, as originally proposed by Arefeva, Faddeev, and Slavnov. In the tree approximation the S-matrix is equal to the exponential of the class…
View article: Systematics of boundary actions in gauge theory and gravity
Systematics of boundary actions in gauge theory and gravity Open
A bstract We undertake a general study of the boundary (or edge) modes that arise in gauge and gravitational theories defined on a space with boundary, either asymptotic or at finite distance, focusing on efficient techniques for computing…
View article: Systematics of Boundary Actions in Gauge Theory and Gravity
Systematics of Boundary Actions in Gauge Theory and Gravity Open
We undertake a general study of the boundary (or edge) modes that arise in gauge and gravitational theories defined on a space with boundary, either asymptotic or at finite distance, focusing on efficient techniques for computing the corre…
View article: Refining the cutoff 3d gravity/$$ T\overline{T} $$ correspondence
Refining the cutoff 3d gravity/$$ T\overline{T} $$ correspondence Open
A bstract Pure gravity in AdS 3 is a theory of boundary excitations, most simply expressed as a constrained free scalar with an improved stress tensor that is needed to match the Brown-Henneaux central charge. Excising a finite part of AdS…
View article: Erratum to: Geometrizing $$ T\overline{T} $$
Erratum to: Geometrizing $$ T\overline{T} $$ Open
ISSN:1126-6708
View article: Field Theory of Interacting Boundary Gravitons
Field Theory of Interacting Boundary Gravitons Open
Pure three-dimensional gravity is a renormalizable theory with two free parameters labelled by G and \Lambda . As a consequence, correlation functions of the boundary stress tensor in AdS _3 are uniquely fixed in terms of one dimens…
View article: Refining the Cutoff 3d Gravity / $T\bar{T}$ Correspondence
Refining the Cutoff 3d Gravity / $T\bar{T}$ Correspondence Open
Pure gravity in AdS$_3$ is a theory of boundary excitations, most simply expressed as a constrained free scalar with an improved stress tensor that is needed to match the Brown--Henneaux central charge. Excising a finite part of AdS gives …
View article: Cutoff AdS<sub>3</sub> versus the $ T\\overline{T} $ deformation
Cutoff AdS<sub>3</sub> versus the $ T\\overline{T} $ deformation Open
A recent proposal relates two dimensional holographic conformal field theories deformed by the integrable $ T\\overline{T} $ flow to AdS3 with a finite radial cutoff. We investigate this proposal by studying perturbative correlation functi…
View article: Witten diagrams revisited: the AdS geometry of conformal blocks
Witten diagrams revisited: the AdS geometry of conformal blocks Open
Here, we develop a new method for decomposing blocks. The steps involved are elementary, requiring no explicit integration, and operate directly in position space. Central to this construction is an appealingly simple answer to the questio…
View article: Field Theory of Interacting Boundary Gravitons
Field Theory of Interacting Boundary Gravitons Open
Pure three-dimensional gravity is a renormalizable theory with two free parameters labelled by $G$ and $Λ$. As a consequence, correlation functions of the boundary stress tensor in AdS$_3$ are uniquely fixed in terms of one dimensionless p…
View article: 3D gravity in a box
3D gravity in a box Open
The quantization of pure 3D gravity with Dirichlet boundary conditions on a finite boundary is of interest both as a model of quantum gravity in which one can compute quantities which are ``more local" than S-matrices or asymptotic boundar…
View article: Report on 2103.13398v2
Report on 2103.13398v2 Open
The quantization of pure 3D gravity with Dirichlet boundary conditions on a finite boundary is of interest both as a model of quantum gravity in which one can compute quantities which are "more local" than S-matrices or asymptotic boundary…
View article: 3D Gravity in a Box
3D Gravity in a Box Open
The quantization of pure 3D gravity with Dirichlet boundary conditions on a finite boundary is of interest both as a model of quantum gravity in which one can compute quantities which are "more local" than S-matrices or asymptotic boundary…
View article: Gravitational Wilson lines in AdS$_{\bf 3}$
Gravitational Wilson lines in AdS$_{\bf 3}$ Open
The construction of gravitational Wilson lines in the Chern-Simons formulation of $AdS_3$ gravity in terms of composite operators in the dual boundary conformal field theory is reviewed. New evidence is presented that the Wilson line, dime…
View article: Typicality and thermality in 2d CFT
Typicality and thermality in 2d CFT Open
A bstract We identify typical high energy eigenstates in two-dimensional conformal field theories at finite c and establish that correlation functions of the stress tensor in such states are accurately thermal as defined by the standard ca…
View article: Renormalization of gravitational Wilson lines
Renormalization of gravitational Wilson lines Open
A bstract We continue the study of the Wilson line representation of conformal blocks in two-dimensional conformal field theory; these have an alternative interpretation as gravitational Wilson lines in the context of the AdS 3 /CFT 2 corr…
View article: The unexpected duality of gravitational and condensed-matter physics
The unexpected duality of gravitational and condensed-matter physics Open
Holographic Quantum Matter, Sean A. Hartnoll, Andrew Lucas, and Subir Sachdev, MIT Press, 2018, $65.00 Buy at Amazon
View article: Witten diagrams for torus conformal blocks
Witten diagrams for torus conformal blocks Open
We give a holographic description of global conformal blocks in two dimensional conformal field theory on the sphere and on the torus. We show that the conformal blocks for one-point functions on the torus can be written as Witten diagrams…
View article: Black holes from CFT: universality of correlators at large c
Black holes from CFT: universality of correlators at large c Open
Two-dimensional conformal field theories at large central charge and with a sufficiently sparse spectrum of light states have been shown to exhibit universal thermodynamics. This thermodynamics matches that of AdS$_3$ gravity, with a Hawki…
View article: Anomalous dimensions from quantum Wilson lines
Anomalous dimensions from quantum Wilson lines Open
We study the self-energy of a gravitating point particle in AdS$_3$, and compare to operator dimensions in CFT$_2$. In particular, we compute the one and two loop diagram contributions to the expectation value of an open Wilson line in the…