Rainich Conditions in (2+1)-Dimensional Gravity
arXiv:1611.04143 · doi:10.1063/1.4974091
Abstract
In (3 + 1) spacetime dimensions the Rainich conditions are a set of equations expressed solely in terms of the metric tensor which are equivalent to the Einstein-Maxwell equations for non-null electromagnetic fields. Here we provide the analogous conditions for (2 + 1)-dimensional gravity coupled to electromagnetism. Both the non-null and null cases are treated. The construction of these conditions is based upon reducing the problem to that of gravity coupled to a scalar field, which we have treated elsewhere. These conditions can be easily extended to other theories of (2 + 1)-dimensional gravity. For example, we apply the geometrization conditions to topologically massive gravity coupled to the electromagnetic field and obtain a family of plane-fronted wave solutions.
9 pages
References in corpus (5)
- The Black Hole in Three Dimensional Space Time
- Null cone preserving maps, causal tensors and algebraic Rainich theory
- New Symbolic Tools for Differential Geometry, Gravitation, and Field Theory
- The Spacetime Geometry of a Null Electromagnetic Field
- Algebraic and differential Rainich conditions for symmetric trace-free tensors of higher rank