Gauge-Invariant Perturbations at a Quantum Gravity Bounce
We study the dynamics of gauge-invariant scalar perturbations in cosmological scenarios with a modified Friedmann equation, such as quantum gravity bouncing cosmologies. We work within a separate universe approximation which captures wavelengths larger than the cosmological horizon; this approximati...
| Main Authors: | , |
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| 格式: | Article |
| 語言: | English |
| 出版: |
MDPI AG
2022-12-01
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| 叢編: | Universe |
| 主題: | |
| 在線閱讀: | https://www.mdpi.com/2218-1997/9/1/29 |