Artículos de revistas
Observational constraints on the dark energy and dark matter mutual coupling
Fecha
2008Registro en:
PHYSICS LETTERS B, v.665, n.2/Mar, p.111-119, 2008
0370-2693
10.1016/j.physletb.2008.05.066
Autor
FENG, Chang
WANG, Bin
Abdalla, Elcio
SU, Rukeng
Institución
Resumen
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 la 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. (c) 2008 Elsevier B.V. All rights reserved.