Kinetically Driven Quintessence
| dc.creator | Chiba, Takeshi | |
| dc.creator | Okabe, Takahiro | |
| dc.creator | Yamaguchi, Masahide | |
| dc.date | 1999-12-22 | |
| dc.date | 2000-01-29 | |
| dc.date.accessioned | 2026-07-07T11:08:32Z | |
| dc.date.available | 2026-07-07T11:08:32Z | |
| dc.description | Recently, a novel class of models for inflation has been found in which the inflationary dynamics is driven solely by (non-canonical) kinetic terms rather than by potential terms. As an obvious extension, we show that a scalar field with non-canonical kinetic terms alone behaves like an energy component which is time-varying and has negative pressure presently, i.e. quintessence. We present a model which has a constant equation of state, that is, a ``kinetic'' counterpart of the Ratra-Peebles model of a quintessence field with a potential term. We make clear the structure of the phase plane and show that the quintessential solution is a late-time attractor. We also give a model for the ``phantom'' component which has an equation of state with $w=p/ρ<-1$. | |
| dc.description | 18 pages, minor changes, to be published in Physical Review D | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9912463 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9912463 | |
| dc.identifier | Phys.Rev.D62:023511,2000 | |
| dc.identifier | doi:10.1103/PhysRevD.62.023511 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/190163 | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Kinetically Driven Quintessence | |
| dc.type | text |