SAIP2016

Irrotational-fluid cosmologies in fourth-order gravity

6 Jul 2016, 14:40

20m

5A (Kramer Law building)

Oral Presentation Track D1 - Astrophysics Astrophysics (1)

Speaker

Ms Maye Elmardi (UCT)

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 explore classes of irrotational-fluid cosmological models in the context of f(R)-gravity in an attempt to put some theoretical and mathematical restrictions on the form of the f(R)- gravitational Lagrangian. In particular, we investigate the consistency of linearised dust models for shear-free cases as well as in the limiting cases when either the gravito-magnetic or gravito-electric components of the Weyl tensor vanish. We also discuss the existence and consistency of classes of non-expanding irrotational spacetimes in f(R)-gravity.

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

PhD.

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

Yes

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes

Peer reviewing

Paper

Accepted on 9 Dec 2017 by Christo Venter

Paper files:

• Letter-to-the-editorSAIP2016.pdf
• Irrotational-Proceedings.pdf