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

被引：16

作者：

Albarran, Imanol ^{[1
,2
]}

Bouhmadi-Lopez, Mariam ^{[3
,4
]}

Chen, Che-Yu ^{[5
,6
,7
]}

Chen, Pisin ^{[5
,6
,7
,8
]}

机构：

[1] Univ Beira Interior, Dept Fis, Rua Marques DAvila & Bolama, P-6201001 Covilha, Portugal

[2] UBI, CMA, Rua Marques DAvila & Bolama, P-6201001 Covilha, Portugal

[3] Univ Basque Country, UPV EHU, Dept Theoret Phys, POB 644, Bilbao 48080, Spain

[4] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Spain

[5] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[6] Natl Taiwan Univ, Ctr Theoret Sci, Taipei 10617, Taiwan

[7] Natl Taiwan Univ, LeCosPA, Taipei 10617, Taiwan

[8] Stanford Univ, SLAC Natl Accelerator Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA

来源：

PHYSICS LETTERS B | 2017年 / 772卷

关键词：

Quantum cosmology; Modified theories of gravity; Dark energy doomsdays; Palatini type of theories; ENERGY;

D O I：

10.1016/j.physletb.2017.07.053

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：814 / 818

页数：5

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