2022/01/03 by Qile Zhang, Wei Fang, Zhang, Qile +3
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #General Relativity and Quantum Cosmology (gr-qc)
paper · pdf · doi:10.48550/arxiv.2201.00444
openalex publication_date 2022/01/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the cosmological evolution of the power law K-essence dark energy (DE) model F(X)= -√(X) + X with a new interaction Q = αρmρϕH-1 in FRWL spacetime. The evolution behavior of dark energy under this interaction is analyzed by using dynamical systems method, and ten critical points are obtained. Among those critical points, a new stable point, which we called Scaling-like dark energy(DE) solution, is very important and interesting. The cosmological meaning of this attractor is different from the Scaling solution and dark energy dominated solution. For some value of model parameters, the universe will evolve to the attractor solution with the dark energy density parameter Ωϕ=0.682946 and the the equation of state wϕ=-0.99, which can be in good agreement with the observed data, and alleviate the Coincidence Problem.