Conference Proceedings
Epoch dependent dark energy
BHJ McKellar, T Goldman, GJ Stephenson, PM Alsing
Aip Conference Proceedings | AMER INST PHYSICS | Published : 2009
DOI: 10.1063/1.3264545
Abstract
We present a model in which the parameter w approaches -1 near a particular value of z, and has significant negative values in a restricted range of z. For example, one can have w≈-1 near z = 1, and w>-0.2 from z = 0 to z = 0.3, and for z>9. The ingredients of the model are neutral fermions (which may be neutrinos, neutralinos, etc) which are very weakly coupled to a light scalar field. This model emphasises the importance of the proposed studies of the properties of dark energy into the region z>1. © 2009 American Institute of Physics.
Grants
Awarded by National Nuclear Security Administration of the U.S. Department of Energy at Los Alamos National Laboratory
Funding Acknowledgements
This work was carried out in part under the auspices of the National Nuclear Security Administration of the U.S. Department of Energy at Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396 and supported in part by the Australian Research Council.