General relativity in a (2 + 1)-dimensional space-time

Details General relativity in a (2 + 1)-dimensional space-time General relativity in a (2 + 1)-dimensional space-time

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984gregr..16..243g&link_type=abstract

General Relativity and Gravitation, Volume 16, Issue 3, pp.243-247

Physics

116

Relativity Theory

Scientific paper

General relativity is formulated for a (2+1)-dimensional space-time. Solutions to the vacuum field equations are locally flat. There are no gravitational waves and no Newtonian attraction between masses. The geometry around a point mass is a cone (locally flat) where the angle deficit at the apex is proportional to the mass. A uniform density planet has a spherical cap interior and a conical exterior solution. A convex polyhedron represents a closed universe with point masses at its vertices and approximates a static spherical universe of uniform density dust.

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