Cosmological signature of tachyon condensation
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Publication:445583
DOI10.1088/1126-6708/2008/09/068zbMATH Open1245.83051arXiv0804.3570OpenAlexW3104369871MaRDI QIDQ445583
Author name not available (Why is that?)
Publication date: 26 August 2012
Published in: (Search for Journal in Brave)
Abstract: We consider the dynamics of the open string tachyon condensation in a framework of the cubic fermionic String Field Theory including a non-minimal coupling with closed string massless modes, the graviton and the dilaton. Coupling of the open string tachyon and the dilaton is motivated by the open String Field Theory in a linear dilaton background and the flat space-time. We note that the dilaton gravity provides several restrictions on the tachyon condensation and show explicitly that the influence of the dilaton on the tachyon condensation is essential and provides a significant effect: oscillations of the Hubble parameter and the state parameter become of a cosmological scale. We give an estimation for the period of these oscillations (0.1-1) Gyr and note a good agreement of this period with the observed oscillations with a period (0.15-0.65) Gyr in a distribution of quasar spectra.
Full work available at URL: https://arxiv.org/abs/0804.3570
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