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Author Asenjo, F.A.; Hojman, S.A. doi  openurl
  Title Class of Exact Solutions for a Cosmological Model of Unified Gravitational and Quintessence Fields Type Journal Article
  Year 2017 Publication Foundations Of Physics Abbreviated Journal Found. Phys.  
  Volume (down) 47 Issue 7 Pages 887-896  
  Keywords Quintessence; Exact solution; Unification of geometry and dark matter  
  Abstract A new approach to tackle Einstein equations for an isotropic and homogeneous Friedmann-Robertson-Walker Universe in the presence of a quintessence scalar field is devised. It provides a way to get a simple exact solution to these equations. This solution determines the quintessence potential uniquely and it differs from solutions which have been used to study inflation previously. It relays on a unification of geometry and dark matter implemented through the definition of a functional relation between the scale factor of the Universe and the quintessence field. For a positive curvature Universe, this solution produces perpetual accelerated expansion rate of the Universe, while the Hubble parameter increases abruptly, attains a maximum value and decreases thereafter. The behavior of this cosmological solution is discussed and its main features are displayed. The formalism is extended to include matter and radiation.  
  Address [Asenjo, Felipe A.] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Santiago, Chile, Email: felipe.asenjo@uai.cl;  
  Corporate Author Thesis  
  Publisher Springer Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0015-9018 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000404224500003 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 741  
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