Suppression of proton decay in quantum gravity
The bound on the proton lifetime is one of a small handful of observations that constrains physics not far from the Planck scale. This calls for a calculation of the proton lifetime in quantum gravity. Here, we calculate how quantum fluctuations of the metric impact four-fermion interactions which m...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-03-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S037026932400087X |
| _version_ | 1827318656023920640 |
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| author | Astrid Eichhorn Shouryya Ray |
| author_facet | Astrid Eichhorn Shouryya Ray |
| author_sort | Astrid Eichhorn |
| collection | DOAJ |
| description | The bound on the proton lifetime is one of a small handful of observations that constrains physics not far from the Planck scale. This calls for a calculation of the proton lifetime in quantum gravity. Here, we calculate how quantum fluctuations of the metric impact four-fermion interactions which mediate proton decay. We find that quantum gravity lowers the scaling dimension of the four-fermion interaction, suppressing proton decay and raising the proton lifetime significantly.As a special case, we analyze asymptotically safe quantum gravity, in which we discover that proton-decay-mediating four-fermion interactions are strictly zero. |
| first_indexed | 2024-03-07T20:05:46Z |
| format | Article |
| id | doaj.art-23fa5d5b36014966b0683f5e83a846ac |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-25T00:04:34Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-23fa5d5b36014966b0683f5e83a846ac2024-03-14T06:13:22ZengElsevierPhysics Letters B0370-26932024-03-01850138529Suppression of proton decay in quantum gravityAstrid Eichhorn0Shouryya Ray1CP3-Origins, University of Southern Denmark, Campusvej 55, 5230 Odense M, DenmarkCP3-Origins, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark; Institut für Theoretische Physik and Würzburg-Dresden Cluster of Excellence ct.qmat, TU Dresden, 01062 Dresden, Germany; Corresponding author.The bound on the proton lifetime is one of a small handful of observations that constrains physics not far from the Planck scale. This calls for a calculation of the proton lifetime in quantum gravity. Here, we calculate how quantum fluctuations of the metric impact four-fermion interactions which mediate proton decay. We find that quantum gravity lowers the scaling dimension of the four-fermion interaction, suppressing proton decay and raising the proton lifetime significantly.As a special case, we analyze asymptotically safe quantum gravity, in which we discover that proton-decay-mediating four-fermion interactions are strictly zero.http://www.sciencedirect.com/science/article/pii/S037026932400087X |
| spellingShingle | Astrid Eichhorn Shouryya Ray Suppression of proton decay in quantum gravity Physics Letters B |
| title | Suppression of proton decay in quantum gravity |
| title_full | Suppression of proton decay in quantum gravity |
| title_fullStr | Suppression of proton decay in quantum gravity |
| title_full_unstemmed | Suppression of proton decay in quantum gravity |
| title_short | Suppression of proton decay in quantum gravity |
| title_sort | suppression of proton decay in quantum gravity |
| url | http://www.sciencedirect.com/science/article/pii/S037026932400087X |
| work_keys_str_mv | AT astrideichhorn suppressionofprotondecayinquantumgravity AT shouryyaray suppressionofprotondecayinquantumgravity |