Abstract
We examine different phenomenological interaction models for Dark Energy and Dark Matter by performing statistical joint analysis with observational data arising from the 182 Gold type Ia supernova samples, the shift parameter of the Cosmic Microwave Background given by the three-year Wilkinson Microwave Anisotropy Probe observations, the baryon acoustic oscillation measurement from the Sloan Digital Sky Survey and age estimates of 35 galaxies. Including the time-dependent observable, we add sensitivity of measurement and give complementary results for the fitting. The compatibility among three different data sets seem to imply that the coupling between dark energy and dark matter is a small positive value, which satisfies the requirement to solve the coincidence problem and the second law of thermodynamics, being compatible with previous estimates.
Highlights
We examine different phenomenological interaction models for Dark Energy and Dark Matter by performing statistical joint analysis with observational data arising from the 182 Gold type Ia supernova samples, the shift parameter of the Cosmic Microwave Background given by the three-year Wilkinson Microwave Anisotropy Probe observations, the baryon acoustic oscillation measurement from the Sloan Digital Sky Survey and age estimates of 35 galaxies
A statistical joint analysis by using observational data coming from the new 182 Gold SNIa samples, the shift parameter of the CMB given by the three-year WMAP observations and the baryonic acoustic oscillation measurement from the SDSS has been carried out for the interaction between dark energy (DE) and dark matter (DM)[17]
The negative coupling has been seen by using the same data from SNIa together with CMB and large-scale structure for the interacting holographic DE model with the interaction proportional to the total dark sector energy density[5] and other models describing the interaction in proportional to the DM energy density[6]
Summary
We examine different phenomenological interaction models for Dark Energy and Dark Matter by performing statistical joint analysis with observational data arising from the 182 Gold type Ia supernova samples, the shift parameter of the Cosmic Microwave Background given by the three-year Wilkinson Microwave Anisotropy Probe observations, the baryon acoustic oscillation measurement from the Sloan Digital Sky Survey and age estimates of 35 galaxies. A statistical joint analysis by using observational data coming from the new 182 Gold SNIa samples, the shift parameter of the CMB given by the three-year WMAP observations and the baryonic acoustic oscillation measurement from the SDSS has been carried out for the interaction between DE and DM[17].
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