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Journal Article

Geometry for the accelerating universe

MPS-Authors
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Schuller,  Frederic P.
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Fulltext (public)

prd76_101501.pdf
(Publisher version), 117KB

0612133v1.pdf
(Preprint), 123KB

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There is no public supplementary material available
Citation

Punzi, R., Schuller, F. P., & Wohlfarth, M. N. R. (2007). Geometry for the accelerating universe. Physical Review D, 76(10): 101501. doi:10.1103/PhysRevD.76.101501.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-479E-6
Abstract
The Lorentzian spacetime metric is refined to an area metric which naturally emerges as a generalized geometry in quantum string and gauge theory. Employing the area metric curvature scalar, the Einstein-Hilbert gravitational action is reinterpreted as dynamics for an area metric. The area metric cosmology of the radiation-dominated early universe does not depart from general relativity, enabling successful nucleosynthesis. But intriguingly, without the need for dark energy or fine-tuning, area metric cosmology explains the observed small acceleration of the late universe.