Physics
Scientific paper
Feb 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005tmgm.meet.1117m&link_type=abstract
The Tenth Marcel Grossmann Meeting. Proceedings of the MG10 Meeting held at Brazilian Center for Research in Physics (CBPF), Rio
Physics
Scientific paper
We address the issue of the possible detection of non-trivial topologies in the context of a dark-energy and dark-matter unification. In this so-called quartessence model, a single fluid is responsible for both the recent accelerated expansion and structure formation. We focus on the particular case of a universe dominated by a generalized Chaplygin gas (GCG), and investigate how sensitive to the model parameters the detectability of cosmic topology is. We discuss which manifolds could have potentially detecatable topologies within current observational bounds. Finally, we examine constraints on the parameter of the GCG equation of state, which arises from a possible detection of the cosmic topology. Our analysis shows that alternatives to the ΛCDM model lead to changes on the detectability of the cosmic topology, motivating further investigations into other models, such as in scalar field quintessence.
Makler Martin
Mota Bruno C. C.
Reboucas Marcelo J.
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