Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tracker phantom field and a cosmological constant: dynamics of a
  composite dark energy model   In this work, we study tracker phantom dark energy models with a general
parameterization of the scalar potentials. Our analysis also considers the
scenario of having both phantom field and the cosmological constant as the dark
energy components. A detailed statistical analysis with current cosmological
observations shows an increase in the value of the Hubble parameter due to the
presence of phantom dark energy but it can not alleviate the Hubble tension
completely. Our results using Bayesian methods suggests a decisive evidence in
favor of a phantom field over a positive cosmological constant, although the
possibility of a negative cosmological constant cannot be ruled out hidden in
the dark sector.

2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th