BROWSE

Related Scientist

Gansukh, Tumurtushaa's photo.

Gansukh, Tumurtushaa
순수물리이론 연구단
more info

ITEM VIEW & DOWNLOAD

The viable f(G) gravity models via reconstruction from the observations

Cited 0 time in webofscience Cited 0 time in scopus
33 Viewed 0 Downloaded
Title
The viable f(G) gravity models via reconstruction from the observations
Author(s)
Seokcheon Lee; Gansukh Tumurtushaa
Subject
dark energy theory, ; modified gravity
Publication Date
2020-06
Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, v.2020, no.6, pp.29
Publisher
IOP PUBLISHING LTD
Abstract
© 2020 IOP Publishing Ltd and Sissa Medialab. We reconstruct the viable f(G) gravity models from the observations and provide the analytic solutions that well describe our numerical results. In order to avoid unphysical challenges that occur during the numerical reconstruction, we generalize f(G) models into f(GA), which is the simple extension of f(G) models with the introduction of a constant A parameter. We employ several observational data together with the stability condition, which reads d2f/dG2>0 and must be satisfied in the late-time evolution of the universe, to give proper initial conditions for solving the perturbation equation. As a result, we obtain the analytic functions that match the numerical solutions. Furthermore, it might be interesting if one can find the physical origin of those analytic solutions and its cosmological implications
URI
https://pr.ibs.re.kr/handle/8788114/7815
DOI
10.1088/1475-7516/2020/06/029
ISSN
1475-7516
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse