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Letter: No-go gravitons

Published 11 April 2006

From Rod Munday

A successful quantum theory of gravity must match those predictions of the current theory, general relativity, which have been confirmed by scientific observation (18 March, p 32). This means that it must predict the irregularities in Mercury’s orbit, time dilation approaching a massive object, the decay in the orbits of binary pulsars due to gravitational waves and the bending of light by a gravitational field (lensing).

As general relativity is founded on the principal of equivalence, that gravitational mass and inertial mass are equivalent, quantum gravity must include an interaction between gravitons and the Higgs boson, the “god” particle postulated to give other particles their mass. It is not obvious how a theory based on gravitons will do any of this.

Article amended on 30 November 2018

We have named gravitational waves correctly

Cardiff, UK

Issue no. 2547 published 15 April 2006

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