Light, Links and Causal Sets

Abstract

After sketching a context in which to seek observable signals of spatio-temporal discreteness, I briefly review the status of the causal set program for quantum gravity, concluding with a simple model for the field produced by a moving charge in a background causal set.

plainTeX, 18 pages, no figures. Most current version is available at http://www.physics.syr.edu/~sorkin/some.papers/ (or wherever my home-page may be)

References in corpus (7)

• The causal set approach to quantum gravity
• Causal Sets: Discrete Gravity (Notes for the Valdivia Summer School)
• Energy-momentum diffusion from spacetime discreteness
• The Geometry of Small Causal Diamonds
• Dynamics of Causal Sets
• Low energy bounds on Poincare violation in causal set theory
• Dynamics for causal sets with matter fields: A Lagrangian-based approach

Cited by in corpus (14)

• The causal set approach to quantum gravity
• Gravitational Decoherence
• Does quantum mechanics tell an atomistic spacetime?
• On the Axioms of Causal Set Theory
• Discreteness and the transmission of light from distant sources
• Comparison theorems for causal diamonds
• Particle simulations in causal set theory
• Quantum Fields on Causal Sets
• Causal set as a discretized phase spacetime
• Path Sums for Propagators in Causal Sets
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• Quantum Limit on Stability of Clocks in a Gravitational Field
• Tsallis entropy composition and the Heisenberg group
• The string theory swampland in the Euclid, SKA and Vera Rubin observatory era