Ultraviolet finite resummation of perturbative quantum gravity
Ultraviolet finite resummation of perturbative quantum gravity
If the metric is chosen to depend exponentially on the conformal factor, and if one works in a gauge where the conformal factor has the wrong sign propagator, perturbative quantum gravity corrections can be partially resummed into a series of terms each of which is ultraviolet finite. These new terms however are not perturbative in some small parameter, and are not individually BRST invariant, or background diffeomorphism invariant. With appropriate parametrisation, the finiteness property holds true also for a full phenomenologically relevant theory of quantum gravity coupled to (beyond the standard model) matter fields, provided massive tadpole corrections are set to zero by a trivial renormalisation.
hep-th, gr-qc
Morris, Tim R.
a9927d31-7a12-4188-bc35-1c9d3a03a6a6
17 September 2024
Morris, Tim R.
a9927d31-7a12-4188-bc35-1c9d3a03a6a6
Morris, Tim R.
(2024)
Ultraviolet finite resummation of perturbative quantum gravity.
Classical and Quantum Gravity, 41, [205006].
(doi:10.48550/arXiv.2401.02546).
Abstract
If the metric is chosen to depend exponentially on the conformal factor, and if one works in a gauge where the conformal factor has the wrong sign propagator, perturbative quantum gravity corrections can be partially resummed into a series of terms each of which is ultraviolet finite. These new terms however are not perturbative in some small parameter, and are not individually BRST invariant, or background diffeomorphism invariant. With appropriate parametrisation, the finiteness property holds true also for a full phenomenologically relevant theory of quantum gravity coupled to (beyond the standard model) matter fields, provided massive tadpole corrections are set to zero by a trivial renormalisation.
Text
2401.02546v1
- Author's Original
Text
2401.02546v2
- Accepted Manuscript
Text
Morris_2024_Class._Quantum_Grav._41_205006
- Version of Record
More information
Submitted date: 4 January 2024
Accepted/In Press date: 3 September 2024
e-pub ahead of print date: 17 September 2024
Published date: 17 September 2024
Additional Information:
39 pages. Further comments and clarifications added. Version accepted for publication in Jour Class and Quant Gravity
Keywords:
hep-th, gr-qc
Identifiers
Local EPrints ID: 486072
URI: http://eprints.soton.ac.uk/id/eprint/486072
ISSN: 0264-9381
PURE UUID: 00036191-1fff-4111-af33-a6f974fd0915
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Date deposited: 08 Jan 2024 17:49
Last modified: 16 Nov 2024 02:32
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