Results 21 to 30 of about 69,077 (284)

Gaudin models and multipoint conformal blocks III: comb channel coordinates and OPE factorisation

open access: yesJournal of High Energy Physics, 2022
We continue the exploration of multipoint scalar comb channel blocks for conformal field theories in 3D and 4D. The central goal here is to construct novel comb channel cross ratios that are well adapted to perform projections onto all intermediate ...
Ilija Burić   +4 more
doaj   +1 more source

Nonlocality, no-signalling, and Bellʼs theorem investigated by Weyl conformal differential geometry [PDF]

open access: yesPhysica Scripta, 2014
The principles and methods of the Conformal Quantum Geometrodynamics (CQG) based on the Weyl's differential geometry are presented. The theory applied to the case of the relativistic single quantum spin 1/2 leads a novel and unconventional derivation of Dirac's equation.
Francesco De Martini, SANTAMATO, ENRICO
openaire   +3 more sources

Dessins d’enfants, Seiberg-Witten curves and conformal blocks

open access: yesJournal of High Energy Physics, 2021
We show how to map Grothendieck’s dessins d’enfants to algebraic curves as Seiberg-Witten curves, then use the mirror map and the AGT map to obtain the corresponding 4d N $$ \mathcal{N} $$ = 2 supersymmetric instanton partition functions and 2d Virasoro ...
Jiakang Bao   +6 more
doaj   +1 more source

Integrable Background Geometries [PDF]

open access: yes, 2014
This work has its origins in an attempt to describe systematically the integrable geometries and gauge theories in dimensions one to four related to twistor theory. In each such dimension, there is a nondegenerate integrable geometric structure, governed
Calderbank, David M. J.
core   +4 more sources

Conformal field theory complexity from Euler-Arnold equations

open access: yesJournal of High Energy Physics, 2020
Defining complexity in quantum field theory is a difficult task, and the main challenge concerns going beyond free models and associated Gaussian states and operations.
Mario Flory, Michal P. Heller
doaj   +1 more source

Equiaffine Braneworld

open access: yesGalaxies, 2020
Higher dimensional theories, wherein our four dimensional universe is immersed into a bulk ambient, have received much attention recently, and the directions of investigation had, as far as we can discern, all followed the ordinary Euclidean hypersurface
Fan Zhang
doaj   +1 more source

Massless fields in plane wave geometry

open access: yes, 1997
Conformal isometry algebras of plane wave geometry are studied. Then, based on the requirement of conformal invariance, a definition of masslessness is introduced and gauge invariant equations of motion, subsidiary conditions, and corresponding gauge ...
Metsaev, R. R.
core   +2 more sources

Pfaffian Systems, Cartan Connections, and the Null Surface Formulation of General Relativity

open access: yesUniverse
This review examines the role of differential forms, Pfaffian systems, and hypersurfaces in general relativity. These mathematical constructions provide the essential tools for general relativity, in which the curvature of spacetime—described by the ...
Emanuel Gallo, Carlos Kozameh
doaj   +1 more source

Differential equations and conformal structures

open access: yes, 2006
We provide five examples of conformal geometries which are naturally associated with ordinary differential equations (ODEs). The first example describes a one-to-one correspondence between the Wuenschmann class of 3rd order ODEs considered modulo contact
Cartan   +22 more
core   +1 more source

Dispersionless integrable systems in 3D and Einstein-Weyl geometry [PDF]

open access: yes, 2013
For several classes of second order dispersionless PDEs, we show that the symbols of their formal linearizations define conformal structures which must be Einstein-Weyl in 3D (or self-dual in 4D) if and only if the PDE is integrable by the method of ...
Ferapontov, Eugene, Kruglikov, Boris
core   +2 more sources

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