A covariant Lagrangian for stable nonsingular bounce
Abstract The nonsingular bounce models usually suffer from the ghost or gradient instabilities, as has been proved recently. In this paper, we propose a covariant effective theory for stable nonsingular bounce, which has the quadratic order of the second order derivative of the field ϕ but the backg...
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| Hlavní autoři: | , |
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| Médium: | Artigo |
| Jazyk: | Inglês |
| Vydáno: |
SpringerOpen
2017-09-01
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| Edice: | Journal of High Energy Physics |
| Témata: | |
| On-line přístup: | http://link.springer.com/article/10.1007/JHEP09(2017)027 |
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