Towards wormhole beyond Horndeski
We address the issue of whether a no-go theorem for static, spherically symmetric wormholes, proven in Horndeski theories, can be circumvented by going beyond Horndeski. We show that the ghost instabilities which are at the heart of the no-go theorem, can indeed be avoided. The wormhole solutions wi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2018-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201819107014 |
| _version_ | 1819145689564708864 |
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| author | Mironov S. Rubakov V. Volkova V. |
| author_facet | Mironov S. Rubakov V. Volkova V. |
| author_sort | Mironov S. |
| collection | DOAJ |
| description | We address the issue of whether a no-go theorem for static, spherically symmetric wormholes, proven in Horndeski theories, can be circumvented by going beyond Horndeski. We show that the ghost instabilities which are at the heart of the no-go theorem, can indeed be avoided. The wormhole solutions with the latter property are, however, strongly fine tuned, and hence it is likely that they are unstable. Furthermore, it remains unclear whether these solutions have other pathologies, like gradient instabilities along angular and radial directions. |
| first_indexed | 2024-12-22T13:02:01Z |
| format | Article |
| id | doaj.art-f967446cae784743a419a216bd199854 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-22T13:02:01Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-f967446cae784743a419a216bd1998542022-12-21T18:24:59ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011910701410.1051/epjconf/201819107014epjconf_quarks2018_07014Towards wormhole beyond HorndeskiMironov S.Rubakov V.Volkova V.We address the issue of whether a no-go theorem for static, spherically symmetric wormholes, proven in Horndeski theories, can be circumvented by going beyond Horndeski. We show that the ghost instabilities which are at the heart of the no-go theorem, can indeed be avoided. The wormhole solutions with the latter property are, however, strongly fine tuned, and hence it is likely that they are unstable. Furthermore, it remains unclear whether these solutions have other pathologies, like gradient instabilities along angular and radial directions.https://doi.org/10.1051/epjconf/201819107014 |
| spellingShingle | Mironov S. Rubakov V. Volkova V. Towards wormhole beyond Horndeski EPJ Web of Conferences |
| title | Towards wormhole beyond Horndeski |
| title_full | Towards wormhole beyond Horndeski |
| title_fullStr | Towards wormhole beyond Horndeski |
| title_full_unstemmed | Towards wormhole beyond Horndeski |
| title_short | Towards wormhole beyond Horndeski |
| title_sort | towards wormhole beyond horndeski |
| url | https://doi.org/10.1051/epjconf/201819107014 |
| work_keys_str_mv | AT mironovs towardswormholebeyondhorndeski AT rubakovv towardswormholebeyondhorndeski AT volkovav towardswormholebeyondhorndeski |