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Advances in High Energy Physics
Volume 2016, Article ID 2594189, 8 pages
Research Article

The Effect of de-Sitter Like Background on Increasing the Zero Point Budget of Dark Energy

1Institute for Advanced Studies in Basic Sciences (IASBS), Gava Zang, Zanjan 45137-66731, Iran
2Department of Physics, Faculty of Science, University of Kurdistan, Pasdaran Street, Sanandaj 66177-15175, Iran
3Islamic Azad University, Sanandaj Branch, Pasdaran Street, P.O. Box 618, Sanandaj, Iran

Received 9 April 2016; Accepted 18 May 2016

Academic Editor: S. Habib Mazharimousavi

Copyright © 2016 Haidar Sheikhahmadi et al. 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.


During this work, using subtraction renormalization mechanism, zero point quantum fluctuations for bosonic scalar fields in a de-Sitter like background are investigated. By virtue of the observed value for spectral index, , for massive scalar field the best value for the first slow roll parameter, , is achieved. In addition, the energy density of vacuum quantum fluctuations for massless scalar field is obtained. The effects of these fluctuations on other components of the universe are studied. By solving the conservation equation, for some different examples, the energy density for different components of the universe is obtained. In the case which all components of the universe are in an interaction, the different dissipation functions, , are considered. The time evolution of shows that has the best agreement in comparison to observational data including CMB, BAO, and SNeIa data set.