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Advances in High Energy Physics
Volume 2019, Article ID 4129061, 4 pages
Research Article

String Theory Explanation of Galactic Rotation Found Using the Geodesic Constraint

Burpham Institute of Advanced Study, UK

Correspondence should be addressed to Mark D. Roberts; moc.liamg@kramebor

Received 21 August 2018; Revised 15 December 2018; Accepted 24 December 2018; Published 23 April 2019

Academic Editor: Salvatore Mignemi

Copyright © 2019 Mark D. Roberts. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


The unique spherically symmetric metric which has vanishing Weyl tensor, is asymptotically de-Sitter, and can model constant galactic rotation curves is presented. Two types of field equations are shown to have this metric as an exact solution. The first is Palatini varied scalar-tensor theory. The second is the low energy limit of string theory modified by inclusion of a contrived potential.