twistor


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twistor

[′twis·tər]
(computer science)
Computer memory element consisting of a helix of a magnetic wire wound under tension at a 45° angle on a short piece of nonmagnetic wire, with a fine-wire solenoid wound over the helix.
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References in periodicals archive ?
Skinner, "Dual superconformal invariance, momentum twistors and Grassmannians," Journal of High Energy Physics, vol.
The mysterious quantum features that Penrose claims can be explained with twistor theory include non-locality and quantum state reduction.
Furthermore, the fact that the proposed Nuclear String hypothesis is derived from a theory which consists of many-sheeted spacetime framework called TGD seems to suggest a plausible link between this model and Kerr-Schild twistor model as described below.
It has a ferreed network, permanent-magnet twistor, semipermanent memory, and a ferrite-sheet call store.
The final two sections cover integrable structures in topological field theories, including the explicit quantum ordering for a special class of quantum geodesic functions, discrete analogues of the Dirac magnetic monopole, and the twistor description of harmonic maps of the Riemann sphere, and algebraic methods in topological field theory and the theory of integrable systems, with discussion of algebras of conjugacy classes of partial elements and Lax operator algebras of type G2.
Their topics include branes and stability, geometric transitions, non-Kahler geometries and string vacua, the K-theory of smooth DM stacks, Gromov-Witten, Gopakumar-Vafa and Donaldson-thomas invariants of Calabi-Yau threefolds, flux compactification geometries and de Sitter vacua in M-theory, N=4 super Yang-mills-theory and integrable spin chains, Yang-Mills amplitures from twistor string theory, and notes on correlation functions in (0,2) theories.
The chief rival to M-theory, albeit having fewer disciples, is twistor theory.
TwistOR is designed for vacuum mixing and dispensing of polymethylmethacrylate cements in orthopedic applications.
The twistor program of Penrose [15] views space-time points as collections of null geodesics and obtains results concerning zero rest mass particles and fields.
Immedica's TwistOR Bone Cement System introduces a new concept in vacuum mixing and dispensing of PMMA cements for orthopedic applications.
These techniques are not very different from Penrose Twistor spaces.