Toy Models of Universe with an Effective Varying Λ-Term in Lyra Manifold
Author
Source
Advances in High Energy Physics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-01-12
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Research on the accelerated expansion of our Universe captures a lot of attention.
The dark energy (DE) is a way to explain it.
In this paper we will consider scalar field quintessence DE with ωDE>-1 EoS, where the dynamics of the DE models related to the dynamics of the scalar field.
We are interested in the study of the behavior of the Universe in the presence of interacting quintessence DE models in Lyra manifold with a varying Λt.
In a considered framework we also would like to propose a new form for Λt.
We found that the models correspond to the transit Universe, which will enter the accelerated expansion phase and will remain there with a constant deceleration parameter q.
We found also that the Λt is a decreasing function which takes a small positive value with Ωm≠0 and ΩQ→const dominating Ωm in the old Universe.
Observational constraints are applied and causality issue via CS2 is discussed as a possible way to either reject or accept the models.
American Psychological Association (APA)
Khurshudyan, M.. 2015. Toy Models of Universe with an Effective Varying Λ-Term in Lyra Manifold. Advances in High Energy Physics،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1052588
Modern Language Association (MLA)
Khurshudyan, M.. Toy Models of Universe with an Effective Varying Λ-Term in Lyra Manifold. Advances in High Energy Physics No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1052588
American Medical Association (AMA)
Khurshudyan, M.. Toy Models of Universe with an Effective Varying Λ-Term in Lyra Manifold. Advances in High Energy Physics. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1052588
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052588