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</script>This work summarises some of the attempts to explain the phenomenon of dark energy as an effective description of complex gravitational physics and the proper interpretation of observations. Cosmological backreaction has been shown to be relevant for observational (precision) cosmology, nevertheless no convincing explanation of dark energy by means of backreaction has been given so far.
15 pages, 3 figures; presented at the 12th Marcel Grossmann Meeting, Paris, July 2009
cosmological model, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Gravitation and Cosmology, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), back reaction, Astrophysics, General Relativity and Quantum Cosmology, cosmic expansion, gravitation, structure formation, dark energy, Astrophysics - Cosmology and Nongalactic Astrophysics
cosmological model, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Gravitation and Cosmology, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), back reaction, Astrophysics, General Relativity and Quantum Cosmology, cosmic expansion, gravitation, structure formation, dark energy, Astrophysics - Cosmology and Nongalactic Astrophysics
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