Cosmic acceleration and crossing of w=-1 barrier in non-local Cubic Superstring Field Theory model

Details Cosmic acceleration and crossing of w=-1 barrier in non-local Cubic Superstring Field Theory model Cosmic acceleration and crossing of w=-1 barrier in non-local Cubic Superstring Field Theory model

2006-05-08

arxiv.org/abs/hep-th/0605085v3

JHEP 0702:041,2007

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, 16 eps figures; v2 typos corrected, references added; v3 uses JHEP3

Scientific paper

10.1088/1126-6708/2007/02/041

We show that the late time rolling of the Cubic Superstring Field Theory (CSSFT) non-local tachyon in the FRW Universe leads to a cosmic acceleration with a periodic crossing of the w=-1 barrier. An asymptotic solution for the tachyon and Hubble parameter by linearizing the non-local equations of motion is constructed explicitly. For a small Hubble parameter the period of oscillations is a number entirely defined by the parameters of the CSSFT action.

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