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Gravitational interactions in 2+1 dimensions

Research output: Contribution to Journal/MagazineJournal articlepeer-review

<mark>Journal publication date</mark>1988
<mark>Journal</mark>Classical and Quantum Gravity
Issue number7
Number of pages9
Pages (from-to)951-959
Publication StatusPublished
<mark>Original language</mark>English


Modifications to Einstein's vacuum equations for gravitation in 2+1 dimensions are studied. The addition of the Schouten-Eisenhart 2-forms to the field equations admits gravitational wave solutions although no non-trivial static rotationally symmetric metrics exist. Higher-order derivative models for the metric are discussed together with a 2+1 Brans-Dicke theory. The latter is solved for a static metric exhibiting singularities.