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  Geometry for the accelerating universe

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.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-479E-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-479F-4
Genre: Journal Article

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 Creators:
Punzi, Raffaele, Author
Schuller, Frederic P.1, Author              
Wohlfarth, Mattias N. R., Author
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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 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.

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 Dates: 2007-11
 Publication Status: Published in print
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 Identifiers: eDoc: 335053
ISI: 000251327400001
DOI: 10.1103/PhysRevD.76.101501
Other: arXiv:hep-th/0612133
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 76 (10) Sequence Number: 101501 Start / End Page: - Identifier: ISSN: 1550-7998