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We show that 4--dimensional conformal field theory is most naturally formulated on Kulkarni 4--folds, i. e. real 4--folds endowed with an integrable quaternionic structure. This leads to a formalism that parallels very closely that of…

General Relativity and Quantum Cosmology · Physics 2009-10-30 Roberto Zucchini

We study correlation functions in five-dimensional non-Lorentzian theories with an $SU(1,3)$ conformal symmetry. Examples of such theories have recently been obtained as $\Omega$-deformed Yang-Mills Lagrangians arising from a null reduction…

High Energy Physics - Theory · Physics 2021-05-06 Neil Lambert , Arthur Lipstein , Rishi Mouland , Paul Richmond

We describe a new correspondence between four-dimensional conformal field theories with extended supersymmetry and two-dimensional chiral algebras. The meromorphic correlators of the chiral algebra compute correlators in a protected sector…

High Energy Physics - Theory · Physics 2015-09-30 Christopher Beem , Madalena Lemos , Pedro Liendo , Wolfger Peelaers , Leonardo Rastelli , Balt C. van Rees

We define the two-dimensional $O(n)$ conformal field theory as a theory that includes the critical dilute and dense $O(n)$ models as special cases, and depends analytically on the central charge. For generic values of $n\in\mathbb{C}$, we…

High Energy Physics - Theory · Physics 2022-05-11 Linnea Grans-Samuelsson , Rongvoram Nivesvivat , Jesper Lykke Jacobsen , Sylvain Ribault , Hubert Saleur

We introduce a formalism for conformal field theory in four dimensions: a symplectic bi-Grassmannian representation of CFT$_4$ Wightman correlators. Working in Klein space with off-shell spinor-helicity variables, we show that correlators…

High Energy Physics - Theory · Physics 2026-05-11 Aswini Bala , Sachin Jain , Dhruva K. S

We construct a set of non-rational conformal field theories that consist of deformations of Toda field theory for sl(n). Besides conformal invariance, the theories still enjoy a remnant infinite-dimensional affine symmetry. The case n=3 is…

High Energy Physics - Theory · Physics 2016-10-12 Juan Pablo Babaro , Gaston Giribet , Arash Ranjbar

We construct field theories in $2+1$ dimensions with multiple conformal symmetries acting on only one of the spatial directions. These can be considered a conformal extension to "subsystem scale invariances", borrowing the language often…

High Energy Physics - Theory · Physics 2021-05-05 Andreas Karch , Amir Raz

We consider 5-point functions in conformal field theories in d > 2 dimensions. Using weight-shifting operators, we derive recursion relations which allow for the computation of arbitrary conformal blocks appearing in 5-point functions of…

High Energy Physics - Theory · Physics 2022-05-23 David Poland , Valentina Prilepina

Liouville field theory on a sphere is considered. We explicitly derive a differential equation for four-point correlation functions with one degenerate field $V_{-\frac{mb}{2}}$. We introduce and study also a class of four-point conformal…

High Energy Physics - Theory · Physics 2009-07-17 V. A. Fateev , A. V. Litvinov , A. Neveu , E. Onofri

We show that the four-point functions in conformal field theory are defined as distributions on the boundary of the region of convergence of the conformal block expansion. The conformal block expansion converges in the sense of…

High Energy Physics - Theory · Physics 2020-06-24 Petr Kravchuk , Jiaxin Qiao , Slava Rychkov

We use the embedding formalism to study correlation functions of a d-dimensional Euclidean CFT in the presence of a $q$ co-dimensional defect. The defect breaks the global conformal group $SO(d+1,1)$ into $SO(d-q+1,1) \times SO(q)$. We…

High Energy Physics - Theory · Physics 2018-11-06 Sunny Guha , Balakrishnan Nagaraj

We realize an explicit conformal mapping between the state and operator pictures in a class of (2+1)-dimensional non-Lorentzian field theories with SU(1,2)$\times$U(1) conformal symmetry. The state picture arises from null reducing…

High Energy Physics - Theory · Physics 2025-03-20 Stefano Baiguera , Troels Harmark , Yang Lei , Ziqi Yan

We build a four-dimensional quaternion-parametrized conformal field theory (QCFT) using quaternion holomorphic functions as the generators of quaternionic conformal transformations. Taking the two-dimensional complex-parametrized conformal…

High Energy Physics - Theory · Physics 2018-04-03 Sergio Giardino

In this paper we study one-dimensional conformal field theory at finite temperature dual to the two-dimensional anti-de Sitter spacetime in the Rindler coordinates. We show that conformal symmetry for thermal two-point functions manifests…

High Energy Physics - Theory · Physics 2016-11-04 Satoshi Ohya

We define and compute the four-dimensional thermal $n$-point conformal block in the projection channel using oscillator representations on $\mathbb{S}^1_\beta \times \mathbb{S}^3$. This is done by evaluating a class of integrals over the…

High Energy Physics - Theory · Physics 2025-08-08 Martin Ammon , Jakob Hollweck , Tobias Hössel , Katharina Wölfl

Causality places nontrivial constraints on QFT in Lorentzian signature, for example fixing the signs of certain terms in the low energy Lagrangian. In d-dimensional conformal field theory, we show how such constraints are encoded in…

High Energy Physics - Theory · Physics 2016-08-05 Thomas Hartman , Sachin Jain , Sandipan Kundu

We report some recent progress in the computation of the n-point correlation functions of conserved currents in a class of four dimensional conformal field theories with higher spin symmetry. Global conformal invariance leads to very strong…

High Energy Physics - Theory · Physics 2013-12-12 Yassen S. Stanev

Higher dimensional Euclidean Liouville conformal field theories (LCFTs) consist of a log-correlated real scalar field with a background charge and an exponential potential. We analyse the LCFT on a four-dimensional manifold with a boundary.…

High Energy Physics - Theory · Physics 2024-07-26 Adwait Gaikwad , Amitay C. Kislev , Tom Levy , Yaron Oz

We observe that conformal blocks of scalar 4-point functions in a $d$-dimensional conformal field theory can mapped to eigenfunctions of a 2-particle hyperbolic Calogero-Sutherland Hamiltonian. The latter describes two coupled…

High Energy Physics - Theory · Physics 2016-08-17 Mikhail Isachenkov , Volker Schomerus

In this letter we discuss the operator product expansion of scalar operators in five-dimensional field theories with an $SU(1,3)\times U(1)$ spacetime symmetry. Such theories arise by a novel conformal null reduction of six-dimensional…

High Energy Physics - Theory · Physics 2024-05-16 N. Lambert , A. Lipstein , R. Mouland