Direct reconstruction of the quintessence potential
نویسندگان
چکیده
منابع مشابه
Direct reconstruction of the quintessence potential
We describe an algorithm which directly determines the quintessence potential from observational data, without using an equation of state parametrisation. The strategy is to numerically determine observational quantities as a function of the expansion coefficients of the quintessence potential, which are then constrained using a likelihood approach. We further impose a model selection criterion...
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Chao Li, Daniel E. Holz, and Asantha Cooray California Institute of Technology, Mail Code 130-33, Pasadena, California 91125, USA Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA, and Department of Astronomy & Astrophysics, University of Chicago, Chicago, Illinois 60637, USA The Observatories of the Carnegie Institution of Washington, Pasadena, California ...
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We develop a theoretical method of constructing the quintessence potential directly from the effective equation of state function w(z), which describes the properties of the dark energy. We apply our method to four parametrizations of equation of state parameter and discuss the general features of the resulting potentials. In particular, it is shown that the constructed quintessence potentials ...
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We use phase space methods to investigate closed, flat, and open FriedmannRobertson-Walker cosmologies with a scalar potential given by the sum of two exponential terms. The form of the potential is motivated by the dimensional reduction of M-theory with non-trivial four-form flux on a maximally symmetric internal space. To describe the asymptotic features of run-away solutions we introduce the...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2005
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.72.083511