The Limits of Quintessence
| dc.creator | Caldwell, R. R. | |
| dc.creator | Linder, Eric V. | |
| dc.date | 2005-05-24 | |
| dc.date.accessioned | 2026-07-07T11:42:26Z | |
| dc.date.available | 2026-07-07T11:42:26Z | |
| dc.description | We present evidence that the simplest particle-physics scalar-field models of dynamical dark energy can be separated into distinct behaviors based on the acceleration or deceleration of the field as it evolves down its potential towards a zero minimum. We show that these models occupy narrow regions in the phase-plane of w and w', the dark energy equation-of-state and its time-derivative in units of the Hubble time. Restricting an energy scale of the dark energy microphysics limits how closely a scalar field can resemble a cosmological constant. These results, indicating a desired measurement resolution of order σ(w')\approx (1+w), define firm targets for observational tests of the physics of dark energy. | |
| dc.description | 4 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0505494 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0505494 | |
| dc.identifier | Phys.Rev.Lett.95:141301,2005 | |
| dc.identifier | doi:10.1103/PhysRevLett.95.141301 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/200881 | |
| dc.subject | Astrophysics | |
| dc.title | The Limits of Quintessence | |
| dc.type | text |