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

Che-Yu Chen; Imanol Albarran; Mariam Bouhmadi-L\'opez; Pisin Chen

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

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arxiv 1703.09263 v2 pith:KMZWSAO5 submitted 2017-03-27 gr-qc astro-ph.COhep-thquant-ph

Imanol Albarran , Mariam Bouhmadi-López , Che-Yu Chen , Pisin Chen This is my paper · ORCID

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keywords doomsdayslsbrclassicaleibilittlemodifiedobservationsquantum

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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.

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