Cosmic transit in phantom massive Chern-Simons models: confrontations with astronomical observations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F25%3A43910086" target="_blank" >RIV/60076658:12310/25:43910086 - isvavai.cz</a>
Result on the web
<a href="https://www.worldscientific.com/doi/10.1142/S0217732325500853" target="_blank" >https://www.worldscientific.com/doi/10.1142/S0217732325500853</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1142/S0217732325500853" target="_blank" >10.1142/S0217732325500853</a>
Alternative languages
Result language
angličtina
Original language name
Cosmic transit in phantom massive Chern-Simons models: confrontations with astronomical observations
Original language description
We study a two-fluid cosmological model in the context of a dynamical Chern-Simons modified massive gravity with a time-varying gravitation predicted from recent astronomical observations. The solutions of the Friedmann equation are hyperbolically characterized by a cosmic transition from deceleration to acceleration and a jerk parameter which tends toward unity at late times. We have discussed two independent cases characterized by both hyperbolic evolution of the scale factor and graviton mass m approximate to 10-33eV. Both models predict a very slow evolution of the gravitational constant and the crossing of the phantom-divide line. Confrontations with various recent astronomical observations including BBN+PP+BAO+SHOES data sets have been done to estimate the parameters of the model.
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
10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
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
40
Issue of the periodical within the volume
24
Country of publishing house
SG - SINGAPORE
Number of pages
21
Pages from-to
nestránkováno
UT code for WoS article
001490284100001
EID of the result in the Scopus database
2-s2.0-105005643414