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

Doomsdays in a modified theory of gravity: a classical and a quantum approach
Authors: Imanol Albarran; Mariam Bouhmadi-López; Che-Yu Chen; Pisin Chen;

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

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.

6 pages. A more careful and detailed analysis of the classical and quantum Hamiltonian included. Physical results unchanged. Version accepted in PLB

Country
Spain
Keywords

Modified theories of gravity, High Energy Physics - Theory, modified theories of gravity, Cosmology and Nongalactic Astrophysics (astro-ph.CO), QC1-999, dark energy doomsdays, quantum cosmology, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), General Relativity and Quantum Cosmology, Dark energy doomsdays, Quantization of the gravitational field, Palatini-type theories, Relativistic cosmology, Quantum Physics, Physics, Quantum cosmology, Relativistic gravitational theories other than Einstein's, including asymmetric field theories, High Energy Physics - Theory (hep-th), Palatini type of theories, Quantum Physics (quant-ph), cosmology, energy, Astrophysics - Cosmology and Nongalactic Astrophysics

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    selected citations
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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    18
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
18
Top 10%
Average
Top 10%
Green
gold