# Cosmological test of the Yilmaz theory of gravity - General Relativity and Quantum Cosmology

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Abstract: We test the Yilmaz theory of gravitation by working out the correspondingFriedmann-type equations generated by assuming the Friedmann-Robertson-Walkercosmological metrics. In the case that space is flat the theory is consistentonly with either a completely empty universe or a negative energy vacuum thatdecays to produce a constant density of matter. In both cases the total energyremains zero at all times, and in the latter case the acceleration of theexpansion is always negative. To obtain a more flexible and potentially morerealistic cosmology, the equation of state relating the pressure and energydensity of the matter creation process must be different from the vacuum, asfor example is the case in the steady-state models of Gold, Bondi, Hoyle andothers. The theory does not support the cosmological principle for curved spaceK =-= 0 cosmological metrics.

Author: ** M. Ibison**

Source: https://arxiv.org/