First-order formalism for dark energy and dust
| Autor: | D. Bazeia, J. J. Rodrigues, L. Losano, R. Rosenfeld |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
High Energy Physics - Theory
Physics Physics and Astronomy (miscellaneous) Differential equation Astrophysics (astro-ph) FOS: Physical sciences Equations of motion General Relativity and Quantum Cosmology (gr-qc) Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics First order General Relativity and Quantum Cosmology Cosmology Physical cosmology Formalism (philosophy of mathematics) Classical mechanics High Energy Physics - Theory (hep-th) Dark energy Engineering (miscellaneous) Scalar field |
| Zdroj: | The European Physical Journal C. 55:113-117 |
| ISSN: | 1434-6052 1434-6044 |
| Popis: | This work deals with first-order formalism for dark energy and dust in standard cosmology, for models described by real scalar field in the presence of dust in spatially flat space. The field dynamics may be standard or tachyonic, and we show how the equations of motion can be solved by first-order differential equations. We investigate a model to illustrate how the dustlike matter may affect the cosmic evolution using this framework. Comment: 5 pages, 1 figure; title changed, new author included, discussions extended, references added, version to appear in EPJC |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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