2001/05/31 by Je-An Gu, W-Y. P. Hwang · 3 citations
Mathematics · Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Cosmology #Cosmology and Gravitation Theories #Dark energy #Field (mathematics) #Gamma-ray bursts and supernovae #Geometry #Mathematical analysis #Mathematical physics #Mathematics #Metric expansion of space #Physics #Quintessence #Scalar (mathematics) #Scalar field #Supernova #Theoretical physics #Uniqueness #astro-ph #hep-ph
paper · pdf · doi:10.1016/s0370-2693(01)00975-3
published as Phys.Lett. B517 (2001) 1-6 · 9 pages, LaTeX, final version
openalex publication_date 2001/09/01 · arxiv created 2002/09/24 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In light of the recent observations of type Ia supernovae suggesting an accelerating expansion of the Universe, we wish in this Letter to point out the possibility of using a complex scalar field as the quintessence to account for the acceleration. In particular, we extend the idea of Huterer and Turner in deriving the reconstruction equations for the complex quintessence, showing the feasibility of making use of a complex scalar field (instead of a real scalar field) while maintaining the uniqueness feature of the reconstruction for two possible situations, respectively. We discuss very briefly how future observations may help to distinguish the different quintessence scenarios, including the scenario with a positive cosmological constant.