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arXiv · hep-th/0701103

Non-local SFT Tachyon and Cosmology

Alexey S. Koshelev
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Abstract

Cosmological scenarios built upon the generalized non-local String Field Theory and $p$-adic tachyons are examined. A general kinetic operator involving an infinite number of derivatives is studied as well as arbitrary parameter $p$. The late time dynamics of just the tachyon around the non-perturbative vacuum is shown to leave the cosmology trivial. A late time behavior of the tachyon and the scale factor of the FRW metric in the presence of the cosmological constant or a perfect fluid with $w>-1$ is constructed explicitly and a possibility of non-vanishing oscillations of the total effective state parameter around the phantom divide is proven.

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Alexey S. Koshelev. 2007-01-27. Non-local SFT Tachyon and Cosmology. https://doi.org/10.1088/1126-6708%2F2007%2F04%2F029

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