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Title of Journal: Commun Math Phys

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Abbravation: Communications in Mathematical Physics

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Springer-Verlag

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DOI

10.1016/0167-2789(87)90210-7

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1432-0916

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Twistor Theory on a Finite Graph

Authors: Paul Baird Mohammad Wehbe
Publish Date: 2011/04/22
Volume: 304, Issue: 2, Pages: 499-
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Abstract

We show how the description of a shearfree ray congruence in Minkowski space as an evolving family of semiconformal mappings can naturally be formulated on a finite graph For this we introduce the notion of holomorphic function on a graph On a regular coloured graph of degree three we recover the spacetime picture In the spirit of twistor theory where a light ray is the more fundamental object from which spacetime points should be derived the line graph whose points are the edges of the original graph should be considered as the basic object The Penrose twistor correspondence is discussed in this context

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  2. Hausdorff Dimension of Julia Sets of Feigenbaum Polynomials with High Criticality
  3. Stability and Duality in $${\mathcal{N}\,{=}\,2}$$ Supergravity
  4. Exponential Mixing for the 3 D Stochastic Navier–Stokes Equations
  5. Binding of Polarons and Atoms at Threshold
  6. Probabilistic Weyl Laws for Quantized Tori
  7. On Perturbations of the Schwarzschild Anti-De Sitter Spaces of Positive Mass
  8. Wall-Crossing, Free Fermions and Crystal Melting
  9. Standing Ring Blow up Solutions to the N-Dimensional Quintic Nonlinear Schrödinger Equation
  10. Laminar Boundary Layers in Convective Heat Transport
  11. There are no Magnetically Charged Particle-like Solutions of the Einstein Yang-Mills Equations for Models with an Abelian Residual Group
  12. Duality of 2D Gravity as a Local Fourier Duality
  13. Nonlinear Asymptotic Stability of the Lane-Emden Solutions for the Viscous Gaseous Star Problem with Degenerate Density Dependent Viscosities
  14. Extended Scaling Relations for Planar Lattice Models
  15. Infinite-Dimensional Schur–Weyl Duality and the Coxeter–Laplace Operator
  16. Phase Boundaries in Algebraic Conformal QFT
  17. On the Singularity of the Free Energy at a First Order Phase Transition
  18. Free Analog of Pressure and Its Legendre Transform
  19. Continuity of the Lyapunov Exponents for Quasiperiodic Cocycles
  20. On the Correlation Function of the Characteristic Polynomials of the Hermitian Wigner Ensemble
  21. Stationary Random Metrics on Hierarchical Graphs Via $${(\min,+)}$$-type Recursive Distributional Equations
  22. Thermalization and Canonical Typicality in Translation-Invariant Quantum Lattice Systems
  23. Higgs Bundles and ( A , B , A )-Branes
  24. Inviscid Incompressible Limits of the Full Navier-Stokes-Fourier System
  25. Global Well-Posedness Issues for the Inviscid Boussinesq System with Yudovich’s Type Data
  26. Dispersive Estimates for Schrödinger Operators in Dimension Two
  27. A Monoidal Category for Perturbed Defects in Conformal Field Theory
  28. On Static Shells and the Buchdahl Inequality for the Spherically Symmetric Einstein-Vlasov System
  29. Holomorphic Factorization for a Quantum Tetrahedron
  30. High Energy Limits of Laplace-Type and Dirac-Type EigenFunctions and Frame Flows
  31. The Operator Product Expansion for Perturbative Quantum Field Theory in Curved Spacetime
  32. The Szegő Kernel on a Sewn Riemann Surface
  33. Wave Relations
  34. An Application of Mirror Extensions
  35. Diffusion in a Weakly Random Hamiltonian Flow
  36. Spherical T-Duality
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