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Related papers: Virasoro blocks and the reparametrization formalis…

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We study chaotic dynamics in two-dimensional conformal field theory through out-of-time order thermal correlators of the form $\langle W(t)VW(t)V\rangle$. We reproduce bulk calculations similar to those of [1], by studying the large $c$…

High Energy Physics - Theory · Physics 2016-07-07 Daniel A. Roberts , Douglas Stanford

Virasoro conformal blocks are a family of important functions defined as power series via the Virasoro algebra. They are a fundamental input to the conformal bootstrap program for 2D conformal field theory (CFT) and are closely related to…

Probability · Mathematics 2024-01-30 Promit Ghosal , Guillaume Remy , Xin Sun , Yi Sun

We consider the conformal blocks in the theories with extended conformal W-symmetry for the integer Virasoro central charges. We show that these blocks for the generalized twist fields on sphere can be computed exactly in terms of the free…

High Energy Physics - Theory · Physics 2016-05-17 P. Gavrylenko , A. Marshakov

We develop a recursive approach to computing Neveu-Schwarz conformal blocks associated with n-punctured Riemann surfaces. This work generalizes the results of [1] obtained recently for the Virasoro algebra. The method is based on the…

High Energy Physics - Theory · Physics 2018-09-26 V. A. Belavin , R. V. Geiko

Aspects of black hole thermodynamics and information loss can be derived as a consequence of Virasoro symmetry. To bolster the connection between Virasoro conformal blocks and AdS$_3$ quantum gravity, we study sl$(2)$ Chern-Simons Wilson…

High Energy Physics - Theory · Physics 2017-09-13 A. Liam Fitzpatrick , Jared Kaplan , Daliang Li , Junpu Wang

We consider $\alpha$-heavy conformal operators in CFT$_2$ which dimensions grow as $h = O(c^\alpha)$ with $\alpha$ being non-negative rational number and conjecture that the large-$c$ asymptotics of the respective 4-point Virasoro conformal…

High Energy Physics - Theory · Physics 2024-08-13 K. B. Alkalaev , P. E. Litvinov

We consider large-$c$ $n$-point Virasoro blocks with $n-k$ background heavy operators and $k$ perturbative heavy operators. Conformal dimensions of heavy operators scale linearly with large $c$, while splitting into background/perturbative…

High Energy Physics - Theory · Physics 2020-05-20 K. B. Alkalaev , Mikhail Pavlov

The conformal anomaly and the Virasoro algebra are fundamental aspects of 2D conformal field theory and conformally covariant models in planar random geometry. In this article, we explicitly derive the Virasoro algebra from an…

Mathematical Physics · Physics 2025-05-06 Sid Maibach , Eveliina Peltola

This paper consists of two parts: (1) Using a Z[1/2]-form of Virasoro vertex operator algebra L(1/2,0) with central charge 1/2, we obtain a modular vertex operator algebra over any field F of finite characteristic different from 2. We…

Quantum Algebra · Mathematics 2021-03-23 Chongying Dong , Ching Hung Lam , Li Ren

We consider sl(2) minimal conformal field theories on a cylinder from a lattice perspective. To each allowed one-dimensional configuration path of the A_L Restricted Solid-on-Solid (RSOS) models we associate a physical state |h> and a…

High Energy Physics - Theory · Physics 2015-06-26 Giovanni Feverati , Paul A. Pearce

We derive recursive representations in the internal weights of N-point Virasoro conformal blocks in the sphere linear channel and the torus necklace channel, and recursive representations in the central charge of arbitrary Virasoro…

High Energy Physics - Theory · Physics 2018-12-03 Minjae Cho , Scott Collier , Xi Yin

We propose a renormalization group scaling function which is constructed from q-deformed fermionic versions of Virasoro characters. By comparison with alternative methods, which take their starting point in the massive theories, we…

High Energy Physics - Theory · Physics 2008-11-26 O. A. Castro-Alvaredo , A. Fring

We study conformal blocks for thermal one-point-functions on the sphere in conformal field theories of general dimension. These thermal conformal blocks satisfy second order Casimir differential equations and have integral representations…

High Energy Physics - Theory · Physics 2019-08-07 Yan Gobeil , Alexander Maloney , Gim Seng Ng , Jie-qiang Wu

We pursue our study of generalised Kac-Moody and Virasoro algebras defined on compact homogeneous manifolds. Extending the well-known Vertex operator in the case of the two-torus or the two-sphere, we obtain explicit bosonic realisations of…

Mathematical Physics · Physics 2023-04-13 Rutwig Campoamor-Stursberg , Michel Rausch de Traubenberg

We present weight normalization: a reparameterization of the weight vectors in a neural network that decouples the length of those weight vectors from their direction. By reparameterizing the weights in this way we improve the conditioning…

Machine Learning · Computer Science 2016-06-07 Tim Salimans , Diederik P. Kingma

We consider a class of conformal defects in Virasoro minimal models that have been defined as fixed points of the renormalisation group and calculate the leading contribution to the reflection coefficient for these defects. This requires…

High Energy Physics - Theory · Physics 2018-08-01 Isao Makabe , Gerard M T Watts

We describe an efficient scheme for evaluating higher order contributions to primordial cosmological perturbations using the "in-in" formalism, which is the basis of modern calculations of non-Gaussian and higher order contributions to the…

High Energy Physics - Theory · Physics 2009-11-05 Peter Adshead , Richard Easther , Eugene A. Lim

In the context of holographic conformal field theories (CFTs), a system of linear partial differential equations was recently proposed to be the higher-dimensional analog of the null-state equations in $d=2$ CFTs at large central charge.…

High Energy Physics - Theory · Physics 2025-03-05 Kuo-Wei Huang

Using the recently developed notion of a fractional Virasoro algebra, we explore the implied operator product expansions in nonlocal conformal field theories and their geometric meaning. We probe the interplay between classical nonlocality…

High Energy Physics - Theory · Physics 2023-11-21 Bora Basa , Gabriele La Nave , Philip W. Phillips

We continue to develop the holographic interpretation of classical conformal blocks in terms of particles propagating in an asymptotically $AdS_3$ geometry. We study $n$-point block with two heavy and $n-2$ light fields. Using the worldline…

High Energy Physics - Theory · Physics 2015-09-30 K. B. Alkalaev , V. A. Belavin