Doomsdays in a modified theory of gravity: a classical and a quantum approach

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Date
2017-09-10
Author
Albarran, Imanol
Bouhmadi López, Mariam ORCID
Chen, Che-Yu
Chen, Pisin
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Physics Letters B 772 : 814-818 (2017)
URI
http://hdl.handle.net/10810/27078
Abstract
By far cosmology is one of the most exciting subject to study, even more so with the current bulk of observations we have at hand. These observations might indicate different kinds of doomsdays, if dark energy follows certain patterns. Two of these doomsdays are the Little Rip (LR) and Little Sibling of the Big Rip (LSBR). In this work, aside from proving the unavoidability of the LR and LSBR in the Eddington-inspired-Born-Infeld (EiBI) scenario, we carry out a quantum analysis of the EiBI theory with a matter field, which, from a classical point of view would inevitably lead to a universe that ends with either LR or LSBR. Based on a modified Wheeler-DeWitt equation, we demonstrate that such fatal endings seems to be avoidable. (C) 2017 Published by Elsevier B.V.
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2017 The Authors. Published by Elsevier Ltd Publishing Group Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as 2017 The Authors. Published by Elsevier Ltd Publishing Group Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).