Results 11 to 20 of about 6,179,788 (353)
Self-dual supergravity and twistor theory [PDF]
Classical and Quantum Gravity, 2007 By generalizing and extending some of the earlier results derived by Manin and Merkulov, a twistor description is given of four-dimensional -extended (gauged) self-dual supergravity with and without cosmological constant.
Martin Wolf
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Beta-deformation in twistor-string theory
Journal of High Energy PhysicsIn this work, we investigate how the marginal beta deformation of the N $$ \mathcal{N} $$ = 4 super-Yang-Mills theory manifests within the context of the topological B-model in the twistor space CP 3 4 $$ {\mathbbm{CP}}^{\left.3\right|4} $$ . We begin by
Eggon Viana
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Palatial twistor theory and the twistor googly problem [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015 A key obstruction to the twistor programme has been its so-called ‘googly problem’, unresolved for nearly 40 years, which asks for a twistor description ofright-handed interacting massless fields (positive helicity), using the same twistor conventions that give rise toleft-handed fields (negative helicity) in the standard ‘nonlinear graviton’ and Ward ...
R. Penrose
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Twistor theory of symplectic manifolds [PDF]
Journal of Geometry and Physics, 2005 This article is a contribution to the understanding of the geometry of the twistor space of a symplectic manifold. We consider the bundle $Z$ with fibre the Siegel domain Sp(2n,R)/U(n) existing over any given symplectic 2n-manifold M.
Andreotti +16 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
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New twistor string theories revisited [PDF]
Physics Letters B, 2009 A gauged version of Berkovits twistor string theory featuring the particle content of N=8 supergravity was suggested by Abou-Zeid, Hull and Mason. The equations of motion for a particular multiplet in the modified theory are examined on the level of basic twistor fields and thereby shown to imply the vanishing of the negative helicity graviton on-shell.
Brödel, J., Wurm, B.
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Twistors, the ASD Yang-Mills equations and 4d Chern-Simons theory
Journal of High Energy Physics, 2023 We show that the approaches to integrable systems via 4d Chern-Simons theory and via symmetry reductions of the anti-self-dual Yang-Mills equations are closely related, at least classically.
Roland Bittleston, David Skinner
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A Deformation of Twistor Space and a Chiral Mass Term in N=4 Super Yang-Mills Theory [PDF]
, 2005 Super twistor space admits a certain (super) complex structure deformation that preserves the Poincare subgroup of the symmetry group PSL(4|4) and depends on 10 parameters.
A.D. Popov +33 more
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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 +4 more
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TWISTOR THEORY FOR EXCEPTIONAL HOLONOMY [PDF]
Mathematika, 2020 8 pages, Preprint IMAR ...
openaire +3 more sources