Supernova, baryon acoustic oscillations, and CMB surface distance constraints on f(G) higher order gravity models

Details Supernova, baryon acoustic oscillations, and CMB surface distance constraints on f(G) higher order gravity models Supernova, baryon acoustic oscillations, and CMB surface distance constraints on f(G) higher order gravity models

2010-04-14

arxiv.org/abs/1004.2459v1

Phys.Rev.D81:063514,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

11 pages, 4 figures

Scientific paper

10.1103/PhysRevD.81.063514

We consider recently proposed higher order gravity models where the action is built from the Einstein-Hilbert action plus a function f(G) of the Gauss-Bonnet invariant. The models were previously shown to pass physical acceptability conditions as well as solar system tests. In this paper, we compare the models to combined data sets of supernovae, baryon acoustic oscillations, and constraints from the CMB surface of last scattering. We find that the models provide fits to the data that are close to those of the LCDM concordance model. The results provide a pool of higher order gravity models that pass these tests and need to be compared to constraints from large scale structure and full CMB analysis.

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