Stability of the Einstein static universe in modified Gauss-Bonnet gravity
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We analyze the stability of the Einstein static universe by considering homogeneous perturbations in the context of f(G) modified Gauss-Bonnet theories of gravity. By considering a generic form of f(G), the stability region of the Einstein static universe is parameterized by the linear equation of state parameter w=p/rho and the second derivative f"(G) of the Gauss-Bonnet term.
5 pages, 1 figure; minor text changes, added references, improved figure; shortened version to comply with length restrictions
5 pages, 1 figure; minor text changes, added references, improved figure; shortened version to comply with length restrictions