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Advances in High Energy Physics
Volume 2014, Article ID 148319, 7 pages
Research Article

Cosmological Constraints on Mirror Matter Parameters

1Web Institute of Physics, 65015 Montesilvano, Italy
2IFPA, Département AGO, Université de Liège, 4000 Liège, Belgium

Received 28 November 2013; Accepted 17 January 2014; Published 26 February 2014

Academic Editor: Maxim Khlopov

Copyright © 2014 Paolo Ciarcelluti and Quentin Wallemacq. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


Up-to-date estimates of the cosmological parameters are presented as a result of numerical simulations of cosmic microwave background and large scale structure, considering a flat Universe in which the dark matter is made entirely or partly of mirror matter, and the primordial perturbations are scalar adiabatic and in linear regime. A statistical analysis using the Markov Chain Monte Carlo method allows to obtain constraints of the cosmological parameters. As a result, we show that a Universe with pure mirror dark matter is statistically equivalent to the case of an admixture with cold dark matter. The upper limits for the ratio of the temperatures of ordinary and mirror sectors are around 0.3 for both the cosmological models, which show the presence of a dominant fraction of mirror matter, .