An inflationary scenario taking into account of possible dark energy effects in the early universe

  • Zhe Chang
  • Ming-Hua LiEmail author
  • Xin Li
  • Sai Wang
Regular Article - Theoretical Physics


We investigate the possible effect of cosmological-constant type dark energy during the inflation period of the early universe. This is accommodated by a new dispersion relation in de Sitter space. The modified inflation model of a minimally coupled scalar field is still able to yield an observation-compatible scale-invariant primordial spectrum, simultaneously having the potential to generate a spectrum with lower power at large scales. A qualitative match to the WMAP 7-year data is presented. We obtain an Ω Λ of the same order of that in the Λ-CDM model. Possible relations between the de Sitter scenario and Doubly Special Relativity (DSR) are also discussed.


Dark Energy Cosmic Microwave Background Wilkinson Microwave Anisotropy Probe Cosmic Microwave Background Anisotropy Cosmic Microwave Background Photon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2012

Authors and Affiliations

  1. 1.Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina
  2. 2.Theoretical Physics Center for Science FacilitiesChinese Academy of SciencesBeijingChina

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