Detailed Information on Publication Record
2017
Cosmological Perturbations in Restricted f(R)-Gravity
KLUSOŇ, Josef, Masud CHAICHIIAN and Amir GHALEEBasic information
Original name
Cosmological Perturbations in Restricted f(R)-Gravity
Name in Czech
Kosmologické poruchy v omezené f(R) gravitaci
Authors
KLUSOŇ, Josef (203 Czech Republic, guarantor, belonging to the institution), Masud CHAICHIIAN (246 Finland) and Amir GHALEE (364 Islamic Republic of Iran)
Edition
Physical review D, American Physical Society, 2017, 2470-0010
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10303 Particles and field physics
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 4.394
RIV identification code
RIV/00216224:14310/17:00095558
Organization unit
Faculty of Science
UT WoS
000406878300004
Keywords (in Czech)
Horavova-Lifsicova gravitaceů; kosmologicke poruchy
Keywords in English
Horava-Lifshitz gravity; Cosmological Perturbations
Tags
International impact, Reviewed
Změněno: 30/3/2018 20:31, Ing. Nicole Zrilić
V originále
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.
In Czech
Zkoumáme metrické poruchy omezené f(R) gravitace v kosmologickém kontextu a studujeme phenomonologické implikace tohoto modelu. Ukážeme, že je možné studovat tuto teorii, kdy rovnice pozadí jsou stejné, jako odvozené z Einstein Hilbertovy akce s kosmologickým členem, že pouze se odlišují na úrovni poruchového počtu.
Links
| GBP201/12/G028, research and development project |
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