Bouncing and Accelerating Solutions in Nonlocal Stringy Models

  • Irina Ya. Aref’eva, Liudmila V. Joukovskaya
  • Published 2007


A general class of cosmological models driven by a nonlocal scalar field inspired by string field theories is studied. In particular cases the scalar field is a string dilaton or a string tachyon. A distinguished feature of these models is a crossing of the phantom divide. We reveal the nature of this phenomena showing that it is caused by an equivalence of… (More)


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