PhilSci Archive

Recovering General Relativity from a Planck scale discrete theory of quantum gravity

Butterfield, Jeremy and Dowker, Fay (2021) Recovering General Relativity from a Planck scale discrete theory of quantum gravity. [Preprint]

[img]
Preview
Text
DowkerButterDiscrete2106.01297.pdf

Download (793kB) | Preview

Abstract

An argument is presented that if a theory of quantum gravity is physically discrete at the Planck scale and the theory recovers General Relativity as an approximation, then, at the current stage of our knowledge, causal sets must arise within the theory, even if they are not its basis.

We show in particular that an apparent alternative to causal sets, viz. a certain sort of discrete Lorentzian simplicial complex, cannot recover General Relativistic spacetimes in the appropriately unique way. For it cannot discriminate between Minkowski spacetime and a spacetime with a certain sort of gravitational wave burst.


Export/Citation: EndNote | BibTeX | Dublin Core | ASCII/Text Citation (Chicago) | HTML Citation | OpenURL
Social Networking:
Share |

Item Type: Preprint
Creators:
CreatorsEmailORCID
Butterfield, Jeremyjb56@cam.ac.uk0000-0002-0215-5802
Dowker, Fayf.dowker@imperial.ac.uk
Additional Information: Also available on the physics arxiv as preprint: 2106.01297
Keywords: causal sets, general relativity, discrete vs. continuous, simplicial complexes, approximation
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Quantum Gravity
Specific Sciences > Physics > Relativity Theory
Specific Sciences > Physics > Symmetries/Invariances
Depositing User: Jeremy Butterfield
Date Deposited: 03 Jun 2021 14:20
Last Modified: 03 Jun 2021 14:20
Item ID: 19150
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Quantum Gravity
Specific Sciences > Physics > Relativity Theory
Specific Sciences > Physics > Symmetries/Invariances
Date: June 2021
URI: http://philsci-archive.pitt.edu/id/eprint/19150

Monthly Views for the past 3 years

Monthly Downloads for the past 3 years

Plum Analytics

Actions (login required)

View Item View Item