Amit Sever
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View article: Correlators of line defect and local operator in conformal field theories with a slightly broken higher-spin symmetry
Correlators of line defect and local operator in conformal field theories with a slightly broken higher-spin symmetry Open
A bstract We study three-dimensional conformal field theories with a large- N limit. Leveraging the framework of slightly broken higher-spin symmetry, we bootstrap correlation functions between the single-trace, local operators and straigh…
View article: Universal constraints for conformal line defects
Universal constraints for conformal line defects Open
We present a novel framework for deriving integral constraints for correlators on conformal line defects. These constraints emerge from the nonlinearly realized ambient-space conformal symmetry. To validate our approach, we examine several…
View article: Correlators of Line Defect and Local Operator in Conformal Field Theories with a Slightly Broken Higher-Spin Symmetry
Correlators of Line Defect and Local Operator in Conformal Field Theories with a Slightly Broken Higher-Spin Symmetry Open
We study three-dimensional conformal field theories with a large-$N$ limit. Leveraging the framework of slightly broken higher-spin symmetry, we bootstrap correlation functions between the single-trace, local operators and straight, confor…
View article: Erratum to: Bootstrapping smooth conformal defects in Chern-Simons-matter theories
Erratum to: Bootstrapping smooth conformal defects in Chern-Simons-matter theories Open
A correction to this paper has been published: https://doi.org/10.1007/JHEP03(2024)055
View article: Planar RG flows on line defects
Planar RG flows on line defects Open
A bstract We study a class of renormalization group flows on line defects that can be described by a generalized free field with ordered planar contractions on the line. They are realized, for example, in large N gauge theories with matter…
View article: Planar RG Flows on Line Defects
Planar RG Flows on Line Defects Open
We study a class of renormalization group flows on line defects that can be described by a generalized free field with ordered planar contractions on the line. They are realized, for example, in large $N$ gauge theories with matter in the …
View article: Bootstrapping Smooth Conformal Defects in Chern-Simons-Matter Theories
Bootstrapping Smooth Conformal Defects in Chern-Simons-Matter Theories Open
The expectation value of a smooth conformal line defect in a CFT is a conformal invariant functional of its path in space-time. For example, in large $N$ holographic theories, these fundamental observables are dual to the open string parti…
View article: A large twist limit for any operator
A large twist limit for any operator Open
A bstract We argue that for any single-trace operator in $$ \mathcal{N} $$ = 4 SYM theory there is a large twist double-scaling limit in which the Feynman graphs have an iterative structure. Such structure can be recast using a graph-bui…
View article: Line operators in Chern-Simons-Matter theories and Bosonization in Three Dimensions II: Perturbative analysis and all-loop resummation
Line operators in Chern-Simons-Matter theories and Bosonization in Three Dimensions II: Perturbative analysis and all-loop resummation Open
A bstract We study mesonic line operators in Chern-Simons theories with bosonic or fermionic matter in the fundamental representation. In this paper, we elaborate on the classification and properties of these operators using all loop resum…
View article: A Large Twist Limit for Any Operator
A Large Twist Limit for Any Operator Open
We argue that for any single-trace operator in ${\cal N}=4$ SYM theory there is a large twist double-scaling limit in which the Feynman graphs have an iterative structure. Such structure can be recast using a graph-building operator. Gener…
View article: Line operators in Chern-Simons-Matter theories and Bosonization in Three Dimensions II -Perturbative Analysis and All-loop Resummation
Line operators in Chern-Simons-Matter theories and Bosonization in Three Dimensions II -Perturbative Analysis and All-loop Resummation Open
We study mesonic line operators in Chern-Simons theories with bosonic or fermionic matter in the fundamental representation. In this paper, we elaborate on the classification and properties of these operators using all loop resummation of …
View article: Line Operators in Chern-Simons–Matter Theories and Bosonization in Three Dimensions
Line Operators in Chern-Simons–Matter Theories and Bosonization in Three Dimensions Open
We study Chern-Simons theories at large N with either bosonic or fermionic matter in the fundamental representation. The most fundamental operators in these theories are mesonic line operators, the simplest example being Wilson lines endin…
View article: Probing multi-particle unitarity with the Landau equations
Probing multi-particle unitarity with the Landau equations Open
We consider the $2\to 2$ scattering amplitude of identical massive particles. We identify the Landau curves in the multi-particle region $16m^2 \leq s, t < 36m^2$. We systematically generate and select the relevant graphs and numerically s…
View article: Line Operators in Chern-Simons-Matter Theories and Bosonization in Three Dimensions
Line Operators in Chern-Simons-Matter Theories and Bosonization in Three Dimensions Open
We study Chern-Simons theories at large $N$ with either bosonic or fermionic matter in the fundamental representation. The most fundamental operators in these theories are mesonic line operators, the simplest example being Wilson lines end…
View article: arXiv : Probing multi-particle unitarity with the Landau equations
arXiv : Probing multi-particle unitarity with the Landau equations Open
We consider the $2\to 2$ scattering amplitude of identical massive particles. We identify the Landau curves in the multi-particle region $16m^2 \leq s, t 16m^2$. Our analysis sheds new light on the complicated analytic structure of nonpe…
View article: Rigorous bounds on the Analytic $S$-matrix
Rigorous bounds on the Analytic $S$-matrix Open
We consider a dual $S$-matrix Bootstrap approach in $d\geq 3$ space-time dimensions which relies solely on the rigorously proven analyticity, crossing, and unitarity properties of the scattering amplitudes. As a proof of principle, we prov…
View article: Operator Product Expansion for Form Factors
Operator Product Expansion for Form Factors Open
We propose an operator product expansion for planar form factors of local operators in N=4 SYM theory. This expansion is based on the dual conformal symmetry of these objects or, equivalently, the conformal symmetry of their dual descripti…
View article: Derivation of the Holographic Dual of a Planar Conformal Field Theory in 4D
Derivation of the Holographic Dual of a Planar Conformal Field Theory in 4D Open
We present the first-principles derivation of a weak-strong duality between the fishnet theory in four dimensions and a discretized stringlike model living in five dimensions. At strong coupling, the dual description becomes classical and …
View article: Hexagonal Wilson loops in planar ${ \mathcal N }=4$ SYM theory at finite coupling
Hexagonal Wilson loops in planar ${ \mathcal N }=4$ SYM theory at finite coupling Open
We report on the complete OPE series for the 6-gluon MHV and NMHV amplitudes in planar $\mathcal{N}=4$ SYM theory. Namely, we provide a finite coupling prediction for all the terms in the expansion of these amplitudes around the collinear …
View article: Redundancy of the Large Gauge Symmetries for QED
Redundancy of the Large Gauge Symmetries for QED Open
We study the implications of Large Gauge Transformations (LGT) on the S-matrix between physical asymptotic states in massive QED. LGT are gauge transformations that do not vanish at infinity. Instead, they asymptotically approach arbitrary…