Perturbative unitarity and the wavefunction of the Universe
Unitarity of time evolution is one of the basic principles constraining physical processes. Its consequences in the perturbative Bunch-Davies wavefunction in cosmology have been formulated in terms of the cosmological optical theorem. In this paper, we re-analyse perturbative unitarity for the Bunch...
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| Format: | Article |
| Language: | English |
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SciPost
2024-06-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.16.6.157 |