Constraining the fractal Chern-Simons modified gravity with astronomical observations and estimation of the fractal dimension of the universe
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F24%3A00616579" target="_blank" >RIV/60077344:_____/24:00616579 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1140/epjp/s13360-024-05150-x" target="_blank" >https://doi.org/10.1140/epjp/s13360-024-05150-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjp/s13360-024-05150-x" target="_blank" >10.1140/epjp/s13360-024-05150-x</a>
Alternative languages
Result language
angličtina
Original language name
Constraining the fractal Chern-Simons modified gravity with astronomical observations and estimation of the fractal dimension of the universe
Original language description
We study the late-time cosmological dynamics of the Friedmann-Robertson-Walker fractal universe based on power counting renormalizable field in dynamical Chern-Simons modified gravity living in a fractal spacetime. The model is characterized by a time-varying gravitational constant and two-fluids which impose a non-violation of the Bianchi identity. Several plausible solutions of the field's equations characterized by power-law evolutions have been discussed. We have constrained our model with recent astronomical data based on Hubble Space Telescope, Type Ia supernovae (SNe) data + SH0ES program, Quasar lensing system RXJ1131-1231, etc., which offers different measurements of the Hubble parameter (Hubble tension) and recent data obtained from LEGA-C ESO. It was observed that the universe is acceleratedly expanding wit time and its fractal dimension lies between 2 and 2.5. Additional features have been obtained and discussed.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10102 - Applied mathematics
Result continuities
Project
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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
European Physical Journal Plus
ISSN
2190-5444
e-ISSN
2190-5444
Volume of the periodical
139
Issue of the periodical within the volume
4
Country of publishing house
DE - GERMANY
Number of pages
18
Pages from-to
342
UT code for WoS article
001205440300001
EID of the result in the Scopus database
2-s2.0-85190758715