Constraining the fractal Chern-Simons modified gravity with astronomical observations and estimation of the fractal dimension of the universe
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Constraining the fractal Chern-Simons modified gravity with astronomical observations and estimation of the fractal dimension of the universe
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Constraining the fractal Chern-Simons modified gravity with astronomical observations and estimation of the fractal dimension of the universe
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10102 - Applied mathematics
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
European Physical Journal Plus
ISSN
2190-5444
e-ISSN
2190-5444
Svazek periodika
139
Číslo periodika v rámci svazku
4
Stát vydavatele periodika
DE - Spolková republika Německo
Počet stran výsledku
18
Strana od-do
342
Kód UT WoS článku
001205440300001
EID výsledku v databázi Scopus
2-s2.0-85190758715