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The canonical frame of purified gravity
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). University of Tartu, Estonia.
Number of Authors: 32019 (English)In: International Journal of Modern Physics D, ISSN 0218-2718, Vol. 28, no 14, article id 1944012Article in journal (Refereed) Published
Abstract [en]

In the recently introduced gauge theory of translations, dubbed Coincident General Relativity (CGR), gravity is described with neither torsion nor curvature in the spacetime affine geometry. The action of the theory enjoys an enhanced symmetry and avoids the second derivatives that appear in the conventional Einstein-Hilbert action. While it implies the equivalent classical dynamics, the improved action principle can make a difference in considerations of energetics, thermodynamics and quantum theory. This paper reports on possible progress in those three aspects of gravity theory. In the so-called purified gravity, (1) energy-momentum is described locally by a conserved, symmetric tensor, (2) the Euclidean path integral is convergent without the addition of boundary or regulating terms and (3) it is possible to identify a canonical frame for quantization.

Place, publisher, year, edition, pages
2019. Vol. 28, no 14, article id 1944012
Keywords [en]
Gravity, gravitational energy, teleparallel geometry
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-177541DOI: 10.1142/S0218271819440127ISI: 000500955400020OAI: oai:DiVA.org:su-177541DiVA, id: diva2:1383234
Available from: 2020-01-07 Created: 2020-01-07 Last updated: 2020-01-07Bibliographically approved

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Koivisto, Tomi S.
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