Slow-roll approximations in Einstein–Gauss–Bonnet gravity formulated in terms of e-folding numbers
Abstract In the Einstein–Gauss–Bonnet (EGB) gravity models, the slow-roll approximation has been extended by taking into account the first-order slow-roll parameter $$\delta _1 =-2\,H^2\,\xi ^\prime /U_0$$ δ 1 = - 2 H 2 ξ ′ / U 0 , which is proportional to the first derivative of the Gauss–Bonnet co...
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-02-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-13895-7 |
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