On Some Exponential Potentials for a Cosmological Scalar Field as Quintessence
نویسندگان
چکیده
منابع مشابه
Quintessence arising from exponential potentials
Measurements of the redshift-luminosity distance relation using high redshift type Ia supernovas combined with cosmic microwave background ~CMB! and galaxy clusters data appear to suggest that the present Universe is flat and undergoing a period of L driven inflation, with the energy density split into two main contributions, Vmatter'1/3 and VL'2/3 @1–3#. Such a startling finding has naturally ...
متن کاملA 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 کاملLoop Corrections to Scalar Quintessence Potentials
Observations indicate that dark energy constitutes a substantial fraction of our Universe [1, 2, 3, 4, 5]. The range of possible candidates includes a cosmological constant and more flexible some form of dark energy with time dependent equation of state, called quintessence [6]. Commonly, realizations of quintessence scenarios feature a light scalar field [7, 8, 9]. The evolution of the scalar ...
متن کاملOne-loop quantum corrections to cosmological scalar field potentials
We study the loop corrections to potentials of complex or coupled real scalar fields used in cosmology to account for dark energy, dark matter or dark fluid. We show that the SUGRA quintessence and dark matter scalar field potentials are stable against the quantum fluctuations, and we propose solutions to the instability of the potentials of coupled quintessence and dark fluid scalar fields. We...
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 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: General Relativity and Gravitation
سال: 2002
ISSN: 0001-7701,1572-9532
DOI: 10.1023/a:1015395512123