Scaling solutions and reconstruction of scalar field potentials
نویسندگان
چکیده
منابع مشابه
A classification of scalar field potentials with cosmological scaling solutions
(1999) A classification of scalar field potentials with cosmological scaling solutions. This document is made available in accordance with publisher policies and may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the URL above for details on accessing the published version. Copyright a...
متن کاملClassification of scalar field potentials with cosmological scaling solutions
An attractive method of obtaining an effective cosmological constant at the present epoch is through the potential energy of a scalar field. Considering models with a perfect fluid and a scalar field, we classify all potentials for which the scalar field energy density scales as a power law of the scale factor when the perfect fluid density dominates. There are three possibilities. The first tw...
متن کاملGeneralized scalar field potentials and inflation.
We investigate the range of inflationary universe models driven by scalar fields possessing a general interaction potential of the form V (φ) = V0φ n exp(−λφm). Power-law, de Sitter and intermediate inflationary universes emerge as special cases together with several new varieties of inflation. Analysing the behaviour of these models at the extrema of φ we derive sufficient constraints on the m...
متن کاملGeneralised Scalar Field Potentials and In ationPaul
We investigate the range of innationary universe models driven by scalar elds possessing a general interaction potential of the form V () = V 0 n exp(? m). Power-law, de Sitter and intermediate innationary universes emerge as special cases together with several new varieties of innation. Analysing the behaviour of these models at the extrema of we derive suucient constraints on the m-n paramete...
متن کاملExponential potentials and cosmological scaling solutions
We present a phase-plane analysis of cosmologies containing a barotropic fluid with equation of state pγ = (γ − 1)ργ, plus a scalar field φ with an exponential potential V ∝ exp(−λκφ) where κ = 8πG. In addition to the well-known inflationary solutions for λ < 2, there exist scaling solutions when λ > 3γ in which the scalar field energy density tracks that of the barotropic fluid (which for exam...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2001
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.64.127301