Instabilities in tensorial nonlocal gravity
We discuss the cosmological implications of nonlocal modifications of general relativity containing tensorial structures. Assuming the presence of standard radiation- and matter-dominated eras, we show that, except in very particular cases, the nonlocal terms contribute a rapidly growing energy dens...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
27 February 2017
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| In: |
Physical review
Year: 2017, Volume: 95, Issue: 4, Pages: 043539 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.95.043539 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevD.95.043539 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.95.043539 
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| Author Notes: | Henrik Nersisyan, Yashar Akrami, Luca Amendola, Tomi S. Koivisto, Javier Rubio, and Adam R. Solomon |
| Summary: | We discuss the cosmological implications of nonlocal modifications of general relativity containing tensorial structures. Assuming the presence of standard radiation- and matter-dominated eras, we show that, except in very particular cases, the nonlocal terms contribute a rapidly growing energy density. These models therefore generically do not have a stable cosmological evolution. |
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| Item Description: | Gesehen am 20.10.2017 |
| Physical Description: | Online Resource |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.95.043539 |