https://doi.org/10.1140/epjc/s10052-023-12321-0
Regular Article - Theoretical Physics
Cosmological constraints on 
CDM models
1
Universidade Estadual Paulista (UNESP), Faculdade de Engenharia e Ciências, Departamento de Física, Av. Dr. Ariberto Pereira da Cunha 333, 12516-410, Guaratinguetá, SP, Brazil
2
Universidade Estadual Paulista (UNESP), Instituto de Ciências e Engenharia, Departamento de Ciências e Tecnologia, R. Geraldo Alckmin, 519, 18409-010, Itapeva, SP, Brazil
3
Universidade Estadual Paulista (UNESP), Instituto de Ciência e Tecnologia, 12247-004, São José dos Campos, SP, Brazil
Received:
27
June
2023
Accepted:
1
December
2023
Published online:
16
December
2023
Problems with the concordance cosmology 
CDM as the cosmological constant problem, coincidence problems and Hubble tension has led to many proposed alternatives, as the CDM, where the now called cosmological term is allowed to vary due to an interaction with pressureless matter. Here, we analyze one class of these proposals, namely, 
, based on dimensional arguments. Using SNe Ia, cosmic chronometers data plus constraints on 
from SH0ES and Planck satellite, we constrain the free parameters of this class of models. By using the Planck prior over , we conclude that the 
term can not be discarded by this analysis, thereby disfavouring models only with the time-variable terms. The SH0ES prior over has an weak evidence in this direction. The subclasses of models with 
and with 
can not be discarded by this analysis. Finally, by using distance priors from CMB, the time-dependence was quite restricted.
© The Author(s) 2023
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