SAIP2014

Quasi-Newtonian and anti-Newtonian universes in f(R)-gravity

11 Jul 2014, 10:20

20m

D Les 204

Oral Presentation Track D1 - Astrophysics Space

Speaker

Dr Amare Abebe (North-West University)

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Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

We investigate a class of shear-free and irrotational perfect fluid cosmological models in the context of modified (higher-order) gravitational theories. In particular, we generalize the potential and acceleration terms of the quasi-Newtonian formulation of General Relativity. We also show the existence of ``anti-Newtonian” cosmological models based on a consistency analysis of Einstein’s field equations applied to f(R)-gravity models.