Approximate Symmetries of Lagrangians for Plane Symmetric Gravitational Wave-Like Spacetimes

Details Approximate Symmetries of Lagrangians for Plane Symmetric Gravitational Wave-Like Spacetimes Approximate Symmetries of Lagrangians for Plane Symmetric Gravitational Wave-Like Spacetimes

2009-01-15

arxiv.org/abs/0901.2278v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages

Scientific paper

10.1393/ncb/i2007-10379-5

Using Lie symmetry methods for differential equations we have investigated
the symmetries of a Lagrangian for a plane symmetric static spacetime.
Perturbing this Lagrangian we explore its approximate symmetries. It has a
non-trivial first-order approximate symmetry.

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