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Spacetime and dark matter from spontaneous breaking of Lorentz symmetry
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). National Institute of Chemical Physics and Biophysics, Estonia.ORCID iD: 0000-0002-9403-8565
Number of Authors: 42018 (English)In: Classical and quantum gravity, ISSN 0264-9381, E-ISSN 1361-6382, Vol. 35, no 23, article id 235003Article in journal (Refereed) Published
Abstract [en]

It is shown that a spontaneously-broken gauge theory of the Lorentz group contains Ashtekar's chiral formulation of general relativity accompanied by dust. From this perspective, gravity is described entirely by a connection omega valued in the Lie algebra of the complexified Lorentz group and a Lorentz-charged scalar field tau. The model is 'pre-geometric' in the sense that the spacetime metric may be constructed only in the symmetry-broken regime. We speculate on the extent to which this dust may account for dark matter and on the behaviour of the theory in regimes where the symmetry is not broken.

Place, publisher, year, edition, pages
2018. Vol. 35, no 23, article id 235003
Keywords [en]
gravitation, dark matter, cosmology
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-162806DOI: 10.1088/1361-6382/aaea96ISI: 000449540100001OAI: oai:DiVA.org:su-162806DiVA, id: diva2:1273510
Available from: 2018-12-21 Created: 2018-12-21 Last updated: 2019-12-17Bibliographically approved

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