Testing the Cosmic Coincidence Problem and the Nature of Dark Energy
Neal DalalDepartment of Physics, University of California at San Diego, La Jolla, California 92093-0319, USAKevork N. AbazajianDepartment of Physics, University of California at San Diego, La Jolla, California 92093-0319Elizabeth JenkinsDepartment of Physics, University of California at San Diego, La Jolla, California 92093-0319Aneesh V. ManoharDepartment of Physics, University of California at San Diego, La Jolla, California 92093-0319
2001en
ABI
Аннотация
Dark energy models which alter the relative scaling behavior of dark energy and matter could provide a natural solution to the cosmic coincidence problem-why the densities of dark energy and dark matter are comparable today. A generalized class of dark energy models is introduced which allows noncanonical scaling of the ratio of dark matter and dark energy with the Robertson-Walker scale factor a(t). We show that determining whether there is a coincidence problem, and the extent of cosmic coincidence, can be addressed by several forthcoming experiments.
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