An oscillating Chern-Simons universe crossing the phantom divide line and alleviating the Hubble tension
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F24%3A00616590" target="_blank" >RIV/60077344:_____/24:00616590 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1142/S021773232450086X" target="_blank" >https://doi.org/10.1142/S021773232450086X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1142/S021773232450086X" target="_blank" >10.1142/S021773232450086X</a>
Alternative languages
Result language
angličtina
Original language name
An oscillating Chern-Simons universe crossing the phantom divide line and alleviating the Hubble tension
Original language description
In order to alleviate the Hubble tension, we propose a new law for the Hubble parameter that varies periodically with time and we study the validity of the dynamics of a flat Friedmann-Robertson-Walker Universe in the context of a generalized Chern-Simons modified gravity (CSMG). We prove that for specific numerical values of the free parameters in the theory, the phantom divide line is crossed and the universe undergoes decelerating expansion and accelerating expansion alternately without singularity. The deceleration and the jerk parameters oscillate also around numerical values in agreement with astronomical BAO+Pantheon SNeIa+Cosmic Chronometers observations.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10102 - Applied mathematics
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Modern Physics Letters A
ISSN
0217-7323
e-ISSN
1793-6632
Volume of the periodical
39
Issue of the periodical within the volume
17N18
Country of publishing house
SG - SINGAPORE
Number of pages
17
Pages from-to
2450086
UT code for WoS article
001275951700005
EID of the result in the Scopus database
2-s2.0-85199698420