Apparent fine tunings for field theories with broken space-time symmetries
We exhibit a class of effective field theories that have hierarchically small Wilson coefficients for operators that are not protected by symmetries but are not finely tuned. These theories possess bounded target spaces and vacua that break space-time symmetries. We give a physical interpretation of...
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| Format: | Article |
| Language: | English |
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SciPost
2024-02-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.16.2.045 |
| _version_ | 1797318097941561344 |
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| author | Alberto Nicolis, Ira Z. Rothstein |
| author_facet | Alberto Nicolis, Ira Z. Rothstein |
| author_sort | Alberto Nicolis, Ira Z. Rothstein |
| collection | DOAJ |
| description | We exhibit a class of effective field theories that have hierarchically small Wilson coefficients for operators that are not protected by symmetries but are not finely tuned. These theories possess bounded target spaces and vacua that break space-time symmetries. We give a physical interpretation of these theories as generalized solids with open boundary conditions. We show that these theories realize unusual RG flows where higher dimensional (seemingly irrelevant) operators become relevant even at weak coupling. Finally, we present an example of a field theory whose vacuum energy relaxes to a hierarchically small value compared to the UV cut-off. |
| first_indexed | 2024-03-08T03:45:33Z |
| format | Article |
| id | doaj.art-1a41c89b858b4269b1854aa9ae2914cc |
| institution | Directory Open Access Journal |
| issn | 2542-4653 |
| language | English |
| last_indexed | 2024-03-08T03:45:33Z |
| publishDate | 2024-02-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics |
| spelling | doaj.art-1a41c89b858b4269b1854aa9ae2914cc2024-02-09T16:21:47ZengSciPostSciPost Physics2542-46532024-02-0116204510.21468/SciPostPhys.16.2.045Apparent fine tunings for field theories with broken space-time symmetriesAlberto Nicolis, Ira Z. RothsteinWe exhibit a class of effective field theories that have hierarchically small Wilson coefficients for operators that are not protected by symmetries but are not finely tuned. These theories possess bounded target spaces and vacua that break space-time symmetries. We give a physical interpretation of these theories as generalized solids with open boundary conditions. We show that these theories realize unusual RG flows where higher dimensional (seemingly irrelevant) operators become relevant even at weak coupling. Finally, we present an example of a field theory whose vacuum energy relaxes to a hierarchically small value compared to the UV cut-off.https://scipost.org/SciPostPhys.16.2.045 |
| spellingShingle | Alberto Nicolis, Ira Z. Rothstein Apparent fine tunings for field theories with broken space-time symmetries SciPost Physics |
| title | Apparent fine tunings for field theories with broken space-time symmetries |
| title_full | Apparent fine tunings for field theories with broken space-time symmetries |
| title_fullStr | Apparent fine tunings for field theories with broken space-time symmetries |
| title_full_unstemmed | Apparent fine tunings for field theories with broken space-time symmetries |
| title_short | Apparent fine tunings for field theories with broken space-time symmetries |
| title_sort | apparent fine tunings for field theories with broken space time symmetries |
| url | https://scipost.org/SciPostPhys.16.2.045 |
| work_keys_str_mv | AT albertonicolisirazrothstein apparentfinetuningsforfieldtheorieswithbrokenspacetimesymmetries |