Emergent scale symmetry: connecting inflation and dark energy
In a variable gravity scenario containing an ultraviolet and an infrared fixed point quantum scale invariance emerges at both fixed points. We discuss a particular model for the crossover between the fixed points which can naturally account for inflation and dark energy using a single scalar field....
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| Main Authors: | , |
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| Format: | Article (Journal) Chapter/Article |
| Language: | English |
| Published: |
May 1, 2017
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| In: |
Arxiv
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| Online Access: | Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1705.00552 Verlag, kostenfrei, Volltext: http://arxiv.org/pdf/1705.00552.pdf 
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| Author Notes: | Javier Rubio, Christof Wetterich |
MARC
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| 520 | |a In a variable gravity scenario containing an ultraviolet and an infrared fixed point quantum scale invariance emerges at both fixed points. We discuss a particular model for the crossover between the fixed points which can naturally account for inflation and dark energy using a single scalar field. In the Einstein-frame formulation the potential can be expressed in terms of Lambert functions, interpolating between a power-law inflationary potential and a mixed quintessence potential. For two natural heating scenarios, the transition between inflation and radiation domination proceeds through a "graceful reheating" stage. The radiation temperature significantly exceeds the temperature of Big Bang Nucleosynthesis. | ||
| 650 | 4 | |a cosmological model | |
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| 650 | 4 | |a effect: quantum | |
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| 650 | 4 | |a fixed point: infrared | |
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| 650 | 4 | |a quintessence: potential | |
| 650 | 4 | |a radiation: temperature | |
| 650 | 4 | |a reheating | |
| 650 | 4 | |a scale: ultraviolet | |
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