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Comment on Coleman-DeLuccia Instantons
by Tom Banks, Bingnan Zhang
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Submission summary
| Authors (as registered SciPost users): | Bingnan Zhang |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2106.12696v2 (pdf) |
| Date accepted: | 2021-11-09 |
| Date submitted: | 2021-10-05 04:28 |
| Submitted by: | Zhang, Bingnan |
| Submitted to: | SciPost Physics |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
We complete an old argument that causal diamonds in the crunching region of the Lorentzian continuation of a Coleman-Deluccia instanton for transitions out of de Sitter space have finite area, and provide quantum models consistent with the principle of detailed balance, which can mimic the instanton transition probabilities for the cases where this diamond is larger or smaller than the causal patch of de Sitter space. We review arguments that potentials which do not have a positive energy theorem when the lowest de Sitter minimum is shifted to zero, may not correspond to real models of quantum gravity.
List of changes
The works of Hartle, Hawking and Hertog are mentioned in the middle of the second page.
Published as SciPost Phys. 12, 015 (2022)