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Stability of a Noncanonical Scalar Field Model during Cosmological Date
Joint Authors
Saaidi, Kh.
Sheikhahmadi, Haidar
Ossoulian, Z.
Golanbari, T.
Source
Advances in High Energy Physics
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-01-13
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Using the noncanonical model of scalar field, the cosmological consequences of a pervasive, self-interacting, homogeneous, and rolling scalar field are studied.
In this model, the scalar field potential is “nonlinear” and decreases in magnitude with increasing the value of the scalar field.
A special solution of the nonlinear field equations of ϕ that has time dependency as fixed point is obtained.
The fixed point relies on the noncanonical term of action and γ-parameter; this parameter appeared in energy density of scalar field redshift.
By means of such fixed point the different eigenvalues of the equation of motion will be obtained.
In different epochs in the evolution of the Universe for different values of q and n, the potentials as a function of scalar field are attained.
The behavior of baryonic perturbations in linear perturbation scenario as a considerable amount of energy density of scalar field at low redshifts prevents the growth of perturbations in the ordinary matter fluid.
The energy density in the scalar field is not appreciably perturbed by nonrelativistic gravitational fields, in either the radiation or matter dominant or scalar field dominated epoch.
American Psychological Association (APA)
Ossoulian, Z.& Golanbari, T. & Sheikhahmadi, Haidar& Saaidi, Kh.. 2016. Stability of a Noncanonical Scalar Field Model during Cosmological Date. Advances in High Energy Physics،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1095172
Modern Language Association (MLA)
Ossoulian, Z.…[et al.]. Stability of a Noncanonical Scalar Field Model during Cosmological Date. Advances in High Energy Physics No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1095172
American Medical Association (AMA)
Ossoulian, Z.& Golanbari, T. & Sheikhahmadi, Haidar& Saaidi, Kh.. Stability of a Noncanonical Scalar Field Model during Cosmological Date. Advances in High Energy Physics. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1095172
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1095172