Geometry from quantum particles

Abstract

We investigate the possibility that a background independent quantum theory of gravity is not a theory of quantum geometry. We provide a way for global spacetime symmetries to emerge from a background independent theory without geometry. In this, we use a quantum information theoretic formulation of quantum gravity and the method of noiseless subsystems in quantum error correction. This is also a method that can extract particles from a quantum geometric theory such as a spin foam model.

17 pages, LaTex

References in corpus (4)

• Graviton propagator from background-independent quantum gravity
• A theory of quantum gravity based on quantum computation
• A method to find quantum noiseless subsystems
• Background Independent Quantum Field Theory and the Cosmological Constant Problem

Cited by in corpus (19)

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• Reconstructing Quantum Geometry from Quantum Information: Area Renormalisation, Coarse-Graining and Entanglement on Spin Networks
• Towards Gravity from the Quantum
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• On Braid Excitations in Quantum Gravity
• Emergent Braided Matter of Quantum Geometry
• Effective Theory of Braid Excitations of Quantum Geometry in terms of Feynman Diagrams
• Emergent matter from 3d generalised group field theories
• Conserved Quantities in Background Independent Theories
• Challenges for Emergent Gravity
• Conserved Topological Defects in Non-Embedded Graphs in Quantum Gravity
• Infinite Degeneracy of States in Quantum Gravity
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• Spacetime topology from the tomographic histories approach: Part II