Ofer Aharony
YOU?
Author Swipe
View article: Large N Chern-Simons-matter fixed points with multiple flavors
Large N Chern-Simons-matter fixed points with multiple flavors Open
In this paper we analyze the $2+1$d conformal fixed points arising from $SU(N_c)$ Chern-Simons-matter theories with multiple flavors $N_f > 1$ in the 't Hooft large $N_c$ limit. The multi-flavor generalization of quasi-fermionic theories (…
View article: Effective strings in QED3
Effective strings in QED3 Open
A bstract Effective string theory describes the physics of long confining strings in theories, like Yang-Mills theory, where the mass gap $$ {M}_{\textrm{gap}}^2 $$ is of the same order as the string tension T . In 2 + 1 dimensions, t…
View article: Effective Strings in QED$_3$
Effective Strings in QED$_3$ Open
Effective string theory describes the physics of long confining strings in theories, like Yang-Mills theory, where the mass gap $M_{gap}^2$ is of the same order as the string tension $T$. In $2+1$ dimensions, there is a class of confining …
View article: A chiral limit for Chern-Simons-matter theories
A chiral limit for Chern-Simons-matter theories Open
A bstract Large N quasi-fermionic Chern-Simons-matter theories have an approximate higher-spin symmetry that strongly constrains their correlation functions. In particular, the 3-point functions for generic spins are combinations of 3 stru…
View article: A string theory for two dimensional Yang-Mills theory. Part I
A string theory for two dimensional Yang-Mills theory. Part I Open
A bstract Two dimensional gauge theories with charged matter fields are useful toy models for studying gauge theory dynamics, and in particular for studying the duality of large N gauge theories to perturbative string theories. A useful st…
View article: On type II string theory on $AdS_3\times S^3\times T^4$ and symmetric orbifolds
On type II string theory on $AdS_3\times S^3\times T^4$ and symmetric orbifolds Open
We discuss in detail the $1+1$-dimensional superconformal field theory dual to type II string theory on $AdS_3\times S^3\times T^4$, emphasizing the string theoretic aspects of this duality. For one unit of NS-NS 5-brane flux ($Q_5=1$), th…
View article: Holographic description of Narain CFTs and their code-based ensembles
Holographic description of Narain CFTs and their code-based ensembles Open
A bstract We provide a precise relation between an ensemble of Narain conformal field theories (CFTs) with central charge c = n , and a sum of (U(1) × U(1)) n Chern-Simons theories on different handlebody topologies. We begin by reviewing …
View article: A chiral limit for Chern-Simons-matter theories
A chiral limit for Chern-Simons-matter theories Open
Large N quasi-fermionic Chern-Simons-matter theories have an approximate higher-spin symmetry that strongly constrains their correlation functions. In particular, the 3-point functions for generic spins are combinations of 3 structures (wi…
View article: The Bethe Ansatz for the superconformal index with unequal angular momenta
The Bethe Ansatz for the superconformal index with unequal angular momenta Open
A few years ago it was shown that the superconformal index of the $\mathcal{N}=4$ supersymmetric $SU(N)$ Yang-Mills theory in the large $N$ limit matches with the entropy of $1/16$-supersymmetric black holes in type IIB string theory on $A…
View article: Phases of Wilson lines: conformality and screening
Phases of Wilson lines: conformality and screening Open
A bstract We study the rich dynamics resulting from introducing static charged particles (Wilson lines) in 2+1 and 3+1 dimensional gauge theories. Depending on the charges of the external particles, there may be multiple defect fixed point…
View article: A String Theory for Two Dimensional Yang-Mills Theory I
A String Theory for Two Dimensional Yang-Mills Theory I Open
Two dimensional gauge theories with charged matter fields are useful toy models for studying gauge theory dynamics, and in particular for studying the duality of large $N$ gauge theories to perturbative string theories. A useful starting p…
View article: Holographic description of Narain CFTs and their code-based ensembles
Holographic description of Narain CFTs and their code-based ensembles Open
We provide a precise relation between an ensemble of Narain conformal field theories (CFTs) with central charge $c=n$, and a sum of $(U(1) \times U(1))^n$ Chern-Simons theories on different handlebody topologies. We begin by reviewing the …
View article: Phases of Wilson Lines: Conformality and Screening
Phases of Wilson Lines: Conformality and Screening Open
We study the rich dynamics resulting from introducing static charged particles (Wilson lines) in 2+1 and 3+1 dimensional gauge theories. Depending on the charges of the external particles, there may be multiple defect fixed points with int…
View article: Tests of the Charge Convexity Conjecture in Caswell-Banks-Zaks theory
Tests of the Charge Convexity Conjecture in Caswell-Banks-Zaks theory Open
A bstract The Charge Convexity Conjecture (CCC) states that in a unitary conformal field theory in d ≥ 3 dimensions with a global symmetry, the minimal dimension of operators in certain representations of the symmetry, as a function of the…
View article: Correlation functions in $$ \textrm{T}\overline{\textrm{T}} $$-deformed Conformal Field Theories
Correlation functions in $$ \textrm{T}\overline{\textrm{T}} $$-deformed Conformal Field Theories Open
A bstract We study the correlation functions of local operators in unitary $$ \textrm{T}\overline{\textrm{T}} $$ -deformed field theories, using their formulation in terms of Jackiw-Teitelboim gravity. The position of the operators is…
View article: Tests of the Charge Convexity Conjecture in Caswell-Banks-Zaks Theory
Tests of the Charge Convexity Conjecture in Caswell-Banks-Zaks Theory Open
The Charge Convexity Conjecture (CCC) states that in a unitary conformal field theory in $d\geq 3$ dimensions with a global symmetry, the minimal dimension of operators in certain representations of the symmetry, as a function of the charg…
View article: Correlation Functions in $\textrm{T}\bar{\textrm{T}}$-deformed Conformal Field Theories
Correlation Functions in $\textrm{T}\bar{\textrm{T}}$-deformed Conformal Field Theories Open
We study the correlation functions of local operators in unitary $\textrm{T}\bar{\textrm{T}}$-deformed field theories, using their formulation in terms of Jackiw-Teitelboim gravity. The position of the operators is defined using the dynami…
View article: Phases of Wilson Lines in Conformal Field Theories
Phases of Wilson Lines in Conformal Field Theories Open
We study the low-energy limit of Wilson lines (charged impurities) in conformal gauge theories in 2+1 and 3+1 dimensions. As a function of the representation of the Wilson line, certain defect operators can become marginal, leading to inte…
View article: Explicit holography for vector models at finite N, volume and temperature
Explicit holography for vector models at finite N, volume and temperature Open
A bstract In previous work we constructed an explicit mapping between large N vector models (free or critical) in d dimensions and a non-local high-spin gravity theory on AdS d +1 , such that the gravitational theory reproduces the field t…
View article: Phases of Wilson Lines in Conformal Field Theories
Phases of Wilson Lines in Conformal Field Theories Open
We study the low-energy limit of Wilson lines (charged impurities) in conformal gauge theories in 2+1 and 3+1 dimensions. As a function of the representation of the Wilson line, certain defect operators can become marginal, leading to inte…
View article: Explicit holography for vector models at finite $N$, volume and temperature
Explicit holography for vector models at finite $N$, volume and temperature Open
In previous work we constructed an explicit mapping between large $N$ vector models (free or critical) in $d$ dimensions and a non-local high-spin gravity theory on $AdS_{d+1}$, such that the gravitational theory reproduces the field theor…
View article: Loops in AdS from conformal field theory
Loops in AdS from conformal field theory Open
We propose and demonstrate a new use for conformal field theory (CFT) crossing equations in the context of AdS/CFT: the computation of loop amplitudes in AdS, dual to non-planar correlators in holographic CFTs. Loops in AdS are largely une…
View article: AdS from CFT for scalar QED
AdS from CFT for scalar QED Open
We construct an explicit bulk dual in anti-de Sitter space, with couplings of order $1/N$, for the $SU(N)$-singlet sector of QED in $d$ space-time dimensions ($2 < d < 4$) coupled to $N$ scalar fields. We begin from the bulk dual for the t…
View article: Convexity of charged operators in CFTs and the weak gravity conjecture
Convexity of charged operators in CFTs and the weak gravity conjecture Open
The Weak Gravity Conjecture is typically stated as a bound on the mass-to-charge ratio of a particle in the theory. Alternatively, it has been proposed that its natural formulation is in terms of the existence of a particle which is self-r…
View article: On Convexity of Charged Operators in CFTs and the Weak Gravity\n Conjecture
On Convexity of Charged Operators in CFTs and the Weak Gravity\n Conjecture Open
The Weak Gravity Conjecture is typically stated as a bound on the\nmass-to-charge ratio of a particle in the theory. Alternatively, it has been\nproposed that its natural formulation is in terms of the existence of a\nparticle which is sel…
View article: A gravity interpretation for the Bethe Ansatz expansion of the $\mathcal{N}=4$ SYM index
A gravity interpretation for the Bethe Ansatz expansion of the $\mathcal{N}=4$ SYM index Open
The superconformal index of the $\mathcal{N}=4$ SU(N) supersymmetric Yang-Mills theory counts the 1/16-BPS states in this theory, and has been used via the AdS/CFT correspondence to count black hole microstates of 1/16-BPS black holes. On …
View article: Modular invariance and uniqueness of TT deformed CFT
Modular invariance and uniqueness of TT deformed CFT Open
Any two dimensional quantum field theory that can be consistently defined on a torus is invariant under modular transformations. In this paper we study families of quantum field theories labeled by a dimensionful parameter t, that have the…
View article: Modular covariance and uniqueness of JT deformed CFTs
Modular covariance and uniqueness of JT deformed CFTs Open
We study families of two dimensional quantum field theories, labeled by a dimensionful parameter μ, that contain a holomorphic conserved U(1) current J(z). We assume that these theories can be consistently defined on a torus, so their part…