| KLUSOŇ, Josef, Masud CHAICHIIAN and Amir GHALEE. Cosmological Perturbations in Restricted f(R)-Gravity. Physical review D. American Physical Society, 2017, vol. 95, No 8, p. nestránkováno, 10 pp. ISSN 2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.95.084009. |
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@article{1410445,
author = {Klusoň, Josef and chaichiian, Masud and Ghalee, Amir},
article_number = {8},
doi = {http://dx.doi.org/10.1103/PhysRevD.95.084009},
keywords = {Horava-Lifshitz gravity; Cosmological Perturbations},
language = {eng},
issn = {2470-0010},
journal = {Physical review D},
title = {Cosmological Perturbations in Restricted f(R)-Gravity},
volume = {95},
year = {2017}
}
TY - JOUR
ID - 1410445
AU - Klusoň, Josef - chaichiian, Masud - Ghalee, Amir
PY - 2017
TI - Cosmological Perturbations in Restricted f(R)-Gravity
JF - Physical review D
VL - 95
IS - 8
SP - nestránkováno
EP - nestránkováno
PB - American Physical Society
SN - 24700010
KW - Horava-Lifshitz gravity
KW - Cosmological Perturbations
N2 - We investigate the metric perturbations of the restricted f(R) theory of gravity in the cosmological context and explore the phenomenological implications of this model. We show that it is possible to construct a restricted model of gravity, in which the background equations are the same as the equations of motion which are derived from the Einstein-Hilbert action with the cosmological constant term. We argue that the deviation from the Einstein-Hilbert model emerges in the perturbed equations, for which we have a nonvanishing anisotropic stress. Further, with the help of the results of Planck data for the modified gravity, we obtain constraints on the parameters of the model.
ER -
KLUSOŇ, Josef, Masud CHAICHIIAN and Amir GHALEE. Cosmological Perturbations in Restricted f(R)-Gravity. \textit{Physical review D}. American Physical Society, 2017, vol.~95, No~8, p.~nestránkováno, 10 pp. ISSN~2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.95.084009.
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