Results 11 to 20 of about 307 (248)

Mini-twistors and the Cotton double copy

Journal of High Energy Physics, 2023
The double copy relates quantities in gauge, gravity and related theories. A well-known procedure for relating exact classical solutions is the Weyl double copy in four spacetime dimensions, and a three-dimensional analogue of this — the Cotton double ...
Mariana Carrillo González, William T. Emond, Nathan Moynihan, Justinas Rumbutis, Chris D. White   +4 more
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The celestial chiral algebra of self-dual gravity on Eguchi-Hanson space

Journal of High Energy Physics, 2023
We consider the twistor description of classical self-dual Einstein gravity in the presence of a defect operator wrapping a certain ℂℙ1. The backreaction of this defect deforms the flat twistor space to that of Eguchi-Hanson space.
Roland Bittleston, Simon Heuveline, David Skinner   +2 more
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A twistorial description of the IKKT-matrix model

Journal of High Energy Physics, 2022
We consider the fuzzy 4-sphere S N 4 $$ {S}_N^4 $$ as a background in the IKKT matrix model, and explore the relation between S N 4 $$ {S}_N^4 $$ and fuzzy twistor space in the semi-classical limit.
Harold C. Steinacker, Tung Tran
doaj   +1 more source

Hyperbolic Twistor Spaces

Rocky Mountain Journal of Mathematics, 2005
LaTeX, 22 pages, to appear in Rocky Mountain J ...
Blair, D.E., Davidov, J., Mus˘karov, O.
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Twistor Spaces for QKT Manifolds [PDF]

Communications in Mathematical Physics, 1998
We find that the target space of two-dimensional (4,0) supersymmetric sigma models with torsion coupled to (4,0) supergravity is a QKT manifold, that is, a quaternionic Kähler manifold with torsion. We give four examples of geodesically complete QKT manifolds one of which is a generalisation of the LeBrun geometry.
Howe, P. S., Opfermann, A., Papadopoulos, G.   +2 more
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Twistor constructions for higher-spin extensions of (self-dual) Yang-Mills

Journal of High Energy Physics, 2021
We present the inverse Penrose transform (the map from spacetime to twistor space) for self-dual Yang-Mills (SDYM) and its higher-spin extensions on a flat background.
Tung Tran
doaj   +1 more source

Complex Multiplication in Twistor Spaces [PDF]

International Mathematics Research Notices, 2020
AbstractDespite the transcendental nature of the twistor construction, the algebraic fibres of the twistor space of a K3 surface share certain arithmetic properties. We prove that for a polarised K3 surface with complex multiplication, all algebraic fibres of its twistor space away from the equator have complex multiplication as well.
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The S-matrix in twistor space [PDF]

Journal of High Energy Physics, 2010
V1: 46 pages + 23 figures. Less telegraphic abstract in the body of the paper. V2: 49 pages + 24 figures. Largely expanded set of references included.
Arkani-Hamed, N., Cachazo, F., Cheung, C., Kaplan, J.   +3 more
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Alternative formulations of the twistor double copy

Journal of High Energy Physics, 2022
The classical double copy relating exact solutions of biadjoint scalar, gauge and gravity theories continues to receive widespread attention. Recently, a derivation of the exact classical double copy was presented, using ideas from twistor theory, in ...
Erick Chacón, Silvia Nagy, Chris D. White   +2 more
doaj   +1 more source

S-duality in twistor space [PDF]

Journal of High Energy Physics, 2012
Abstract In type IIB string compactifications on a Calabi-Yau threefold, the hypermultiplet moduli space $ {\mathcal{M}_H} $ must carry an isometric action of the modular group SL(2, $ \mathbb{Z} $ ), inherited from the S-duality symmetry of type IIB string theory ...
Alexandrov, Sergey, Pioline, Boris
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