http://arxiv.org/abs/1702.01603
A class of generalized Galileon cosmological models, which can be described by a point-like Lagrangian, is considered in order to utilize Noether’s Theorem to determine conservation laws for the field equations. In the Friedmann-Lema\^{\i}tre-Robertson-Walker universe, the existence of a nontrivial conservation law indicates the integrability of the field equations. Due to the complexity of the latter, we apply the differential invariants approach in order to construct special power-law solutions and study their stability.
N. Dimakis, A. Giacomini, S. Jamal, et. al.
Tue, 7 Feb 17
31/64
Comments: 13 pages, 4 figures