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This note is an extension of a recent work on the analytical bootstrapping of $O(N)$ models. An additonal feature of the $O(N)$ model is that the OPE contains trace and antisymmetric operators apart from the symmetric-traceless objects…

High Energy Physics - Theory · Physics 2016-07-20 Parijat Dey , Apratim Kaviraj , Kallol Sen

We study the 2D symmetric orbifold CFT of two copies of free bosons. The twist operator can join the two separated copies in the untwisted sector into a joined copy in the twisted sector. Starting with a state with any number of quanta in…

High Energy Physics - Theory · Physics 2023-03-22 Bin Guo , Shaun D. Hampton

We examine two-dimensional conformal field theories (CFTs) at central charge c=0. These arise typically in the description of critical systems with quenched disorder, but also in other contexts including dilute self-avoiding polymers and…

High Energy Physics - Theory · Physics 2016-11-23 V. Gurarie , A. W. W. Ludwig

Working in the context of the proposed duality between 3D higher spin gravity and 2D W_N minimal model CFTs, we compute a class of four-point functions in the bulk and on the boundary, and demonstrate precise agreement between them. This is…

High Energy Physics - Theory · Physics 2015-06-15 Eliot Hijano , Per Kraus , Eric Perlmutter

We study the spectrum and OPE coefficients of the three-dimensional critical O(2) model, using four-point functions of the leading scalars with charges 0, 1, and 2 ($s$, $\phi$, and $t$). We obtain numerical predictions for low-twist OPE…

High Energy Physics - Theory · Physics 2020-12-02 Junyu Liu , David Meltzer , David Poland , David Simmons-Duffin

We use numerical bootstrap techniques to study correlation functions of traceless symmetric tensors of $O(N)$ with two indexes $t_{ij}$. We obtain upper bounds on operator dimensions for all the relevant representations and several values…

High Energy Physics - Theory · Physics 2023-04-12 Marten Reehorst , Maria Refinetti , Alessandro Vichi

We consider general 2D orbifold CFTs of the form M^N/S_N, with M a target space manifold and S_N the symmetric group, and generalize the Lunin-Mathur covering space technique in two ways. First, we consider excitations of twist operators by…

High Energy Physics - Theory · Physics 2015-06-12 Benjamin A. Burrington , Amanda W. Peet , Ida G. Zadeh

The entanglement entropy in three-dimensional conformal field theories (CFTs) receives a logarithmic contribution characterized by a regulator-independent function $a(\theta)$ when the entangling surface contains a sharp corner with opening…

High Energy Physics - Theory · Physics 2015-10-14 Pablo Bueno , Robert C. Myers , William Witczak-Krempa

We study Kac operators (e.g. energy operator) in percolation and self-avoiding walk bulk CFTs with central charge $c=0$. The proper normalizations of these operators can be deduced at generic $c$ by requiring the finiteness and reality of…

High Energy Physics - Theory · Physics 2025-07-09 Yifei He

Correlation functions of energy flow operators (energy-energy correlators) are one of the simplest observables in quantum field theory and gravity, with diverse applications ranging from real world collider physics to constraining the space…

High Energy Physics - Theory · Physics 2025-12-12 Bianka Meçaj , Ian Moult , Matthew T. Walters , Yuan Xin

We derive constraints on the operator product expansion of two stress tensors in conformal field theories (CFTs), both generic and holographic. We point out that in large $N$ CFTs with a large gap to single-trace higher spin operators, the…

High Energy Physics - Theory · Physics 2018-08-15 David Meltzer , Eric Perlmutter

We derive the Ward identities of Conformal Field Theory (CFT) within the framework of Schramm-Loewner Evolution (SLE) and some related processes. This result, inspired by the observation that particular events of SLE have the correct…

Mathematical Physics · Physics 2009-11-11 B. Doyon , V. Riva , J. Cardy

It is shown explicitly that the correlation functions of Conformal Field Theories (CFT) with the logarithmic operators are invariant under the differential realization of Borel subalgebra of $\W_\infty$-algebra. This algebra is constructed…

High Energy Physics - Theory · Physics 2009-10-30 A. Shafiekhani , M. R. Rahimi Tabar

We calculate three-point functions of two protected operators and one twist-two operator with arbitrary even spin j in N=4 SYM theory to one-loop order. In order to carry out the calculations we project the indices of the spin j operator to…

High Energy Physics - Theory · Physics 2015-06-05 Jan Plefka , Konstantin Wiegandt

We compute a set of correlation functions of operator insertions on the 1/8 BPS Wilson loop in $\mathcal{N}=4$ SYM by employing supersymmetric localization, OPE and the Gram-Schmidt orthogonalization. These correlators exhibit a simple…

High Energy Physics - Theory · Physics 2018-11-09 Simone Giombi , Shota Komatsu

By interpreting the fusion matrix as an adjacency matrix we associate a loop model to every primary operator of a generic conformal field theory. The weight of these loop models is given by the quantum dimension of the corresponding primary…

Statistical Mechanics · Physics 2009-02-26 M. A. Rajabpour

We develop a diagrammatic language for symmetric product orbifolds of two-dimensional conformal field theories. Correlation functions of twist operators are written as sums of diagrams: each diagram corresponds to a branched covering map…

High Energy Physics - Theory · Physics 2010-03-23 Ari Pakman , Leonardo Rastelli , Shlomo S. Razamat

We study O(n)-symmetric two-dimensional conformal field theories (CFTs) for a continuous range of n below two. These CFTs describe the fixed point behavior of self-avoiding loops. There is a pair of known fixed points connected by an RG…

High Energy Physics - Theory · Physics 2021-12-16 Victor Gorbenko , Bernardo Zan

We introduce a new class of operators in any theory with a 't Hooft large-$N$ limit that we call colour-twist operators. They are defined by twisting the colour-trace with a global symmetry transformation and are continuously linked to…

High Energy Physics - Theory · Physics 2020-07-15 Andrea Cavaglia , David Grabner , Nikolay Gromov , Amit Sever

We consider the ratio of the correlation function of n+1 local operators over the correlator of the first n of these operators in planar N=4 super-Yang-Mills theory, and consider the limit where the first n operators become pairwise null…

High Energy Physics - Theory · Physics 2015-05-30 Tim Adamo