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Advances in High Energy Physics
Volume 2019, Article ID 5234014, 11 pages
Research Article

Dark Energy in Spherically Symmetric Universe Coupled with Brans-Dicke Scalar Field

1Department of Mathematics, Mizoram University, Aizawl, Mizoram 796004, India
2Department of Mathematics, BITS Pilani K K Birla Goa Campus, Goa 403726, India

Correspondence should be addressed to Gauranga C. Samanta; moc.liamg@18agnaruag

Received 5 March 2019; Accepted 27 March 2019; Published 2 May 2019

Guest Editor: Subhajit Saha

Copyright © 2019 Koijam Manihar Singh and Gauranga C. Samanta. 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 phenomenon of dark energy and its manifestations are studied in a spherically symmetric universe considering the Brans-Dicke scalar tensor theory. In the first model, the dark energy behaves like a phantom type and in such a universe the existence of negative time is validated with an indication that our universe started its evolution before . Dark energy prevalent in this universe is found to be more active at times when other types of energies remain passive. The second model of universe begins with big bang. On the other hand, the dark energy prevalent in the third model is found to be of the quintessence type. Here, it is seen that the dark energy triggers the big bang and after that much of the dark energy reduces to dark matter. One peculiarity in such a model is that the scalar field is prevalent eternally; it never tends to zero.