http://arxiv.org/gr-qc/0607014 [Broken](adsbygoogle = window.adsbygoogle || []).push({});

An idea of where matter comes from

"...The first goal of this paper is to show that matter can arise in the most natural way in this formalism by introducing the simplest possible term breaking the gauge symmetry of the theory in a localized way. The gauge degrees of freedom are then promoted to dynamical degree of freedom, and as we will show, reproduce the dynamics of a relativistic particle coupled to gravity. This realizes explicitly in four dimension the idea that matter (relativistic particles) can arise as a charged (under SO(4, 1)) topological gravitational defect.

This strategy, well known in three dimensions, gives a new perspective where matter and gravity are geometrically unified [6] and was the key ingredient in the recent construction of the effective action of matter fields coupled to quantum three dimensional gravity [7]..."

It worked in 3D, and we were waiting to see if they could pull it off in 4D.

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# Where matter comes from

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