Cosmological Signature of Tachyon Condensation
| dc.creator | Aref'eva, I. Ya. | |
| dc.creator | Koshelev, A. S. | |
| dc.date | 2008-04-22 | |
| dc.date | 2008-06-17 | |
| dc.date.accessioned | 2026-07-07T12:24:13Z | |
| dc.date.available | 2026-07-07T12:24:13Z | |
| dc.description | 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. | |
| dc.description | 19 pages, JHEP3 class; v2: presentation in Section 3 improved | |
| dc.identifier | https://arxiv.org/abs/0804.3570 | |
| dc.identifier | http://arxiv.org/abs/0804.3570 | |
| dc.identifier | JHEP 0809:068,2008 | |
| dc.identifier | doi:10.1088/1126-6708/2008/09/068 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214255 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | Astrophysics | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Cosmological Signature of Tachyon Condensation | |
| dc.type | text |