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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2402.14785 |
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| _version_ | 1866917739035099136 |
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| author | Calcagni, Gianluca Modesto, Leonardo |
| author_facet | Calcagni, Gianluca Modesto, Leonardo |
| contents | We introduce the Lorentzian path integral of nonlocal quantum gravity. After introducing the functional measure, the Faddeev-Popov sector and the field correlators, we move to perturbation theory and describe Efimov analytic continuation of scattering amplitudes to Euclidean momenta and back to Lorentzian. We show that the conformal instability problem in the Euclidean path integral is solved by suitable gauge choices at the perturbative level. The three examples of Einstein gravity, Stelle gravity and nonlocal quantum gravity are given. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_14785 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Path integral and conformal instability in nonlocal quantum gravity Calcagni, Gianluca Modesto, Leonardo High Energy Physics - Theory We introduce the Lorentzian path integral of nonlocal quantum gravity. After introducing the functional measure, the Faddeev-Popov sector and the field correlators, we move to perturbation theory and describe Efimov analytic continuation of scattering amplitudes to Euclidean momenta and back to Lorentzian. We show that the conformal instability problem in the Euclidean path integral is solved by suitable gauge choices at the perturbative level. The three examples of Einstein gravity, Stelle gravity and nonlocal quantum gravity are given. |
| title | Path integral and conformal instability in nonlocal quantum gravity |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2402.14785 |