Exploring defects with degrees of freedom in free scalar CFTs
Abstract Defects in conformal field theories are interesting objects to study from both formal and applied points of view. In this paper, we construct conformal defects in free scalar field CFTs in diverse dimensions. After discussing the possible quadratic defects, we explore interacting setups. Th...
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SpringerOpen
2025-03-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP03(2025)147 |
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| author | Vladimir Bashmakov Jacopo Sisti |
| author_facet | Vladimir Bashmakov Jacopo Sisti |
| author_sort | Vladimir Bashmakov |
| collection | DOAJ |
| description | Abstract Defects in conformal field theories are interesting objects to study from both formal and applied points of view. In this paper, we construct conformal defects in free scalar field CFTs in diverse dimensions. After discussing the possible quadratic defects, we explore interacting setups. These are realized by coupling the bulk free scalar to lower-dimensional theories, including the unitary family of minimal models M m m + 1 $$ \mathcal{M}\left(m,m+1\right) $$ . Another example involves coupling to a two-dimensional free scalar field, from which we construct surface defects for the bulk dimensions three and five. Additionally, we consider monodromy defects associated with a global U(1) flavour symmetry. In these theories, we study both self-defect interactions and couplings to Minimal Models, finding new IR defect fixed points. For all our examples, we provide results for correlation functions, such as those involving the bulk stress tensor and the displacement operator, and for the defect central charges. |
| format | Article |
| id | doaj-art-70a1586685c54ed1b1194fdf1483ee20 |
| institution | DOAJ |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | SpringerOpen |
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| series | Journal of High Energy Physics |
| spelling | doaj-art-70a1586685c54ed1b1194fdf1483ee202025-08-20T03:10:13ZengSpringerOpenJournal of High Energy Physics1029-84792025-03-012025315710.1007/JHEP03(2025)147Exploring defects with degrees of freedom in free scalar CFTsVladimir Bashmakov0Jacopo Sisti1Institute for Molecules and Materials, Radboud UniversityDepartment of Physics and Astronomy, Uppsala UniversityAbstract Defects in conformal field theories are interesting objects to study from both formal and applied points of view. In this paper, we construct conformal defects in free scalar field CFTs in diverse dimensions. After discussing the possible quadratic defects, we explore interacting setups. These are realized by coupling the bulk free scalar to lower-dimensional theories, including the unitary family of minimal models M m m + 1 $$ \mathcal{M}\left(m,m+1\right) $$ . Another example involves coupling to a two-dimensional free scalar field, from which we construct surface defects for the bulk dimensions three and five. Additionally, we consider monodromy defects associated with a global U(1) flavour symmetry. In these theories, we study both self-defect interactions and couplings to Minimal Models, finding new IR defect fixed points. For all our examples, we provide results for correlation functions, such as those involving the bulk stress tensor and the displacement operator, and for the defect central charges.https://doi.org/10.1007/JHEP03(2025)147Boundary Quantum Field TheoryRenormalization GroupScale and Conformal Symmetries |
| spellingShingle | Vladimir Bashmakov Jacopo Sisti Exploring defects with degrees of freedom in free scalar CFTs Journal of High Energy Physics Boundary Quantum Field Theory Renormalization Group Scale and Conformal Symmetries |
| title | Exploring defects with degrees of freedom in free scalar CFTs |
| title_full | Exploring defects with degrees of freedom in free scalar CFTs |
| title_fullStr | Exploring defects with degrees of freedom in free scalar CFTs |
| title_full_unstemmed | Exploring defects with degrees of freedom in free scalar CFTs |
| title_short | Exploring defects with degrees of freedom in free scalar CFTs |
| title_sort | exploring defects with degrees of freedom in free scalar cfts |
| topic | Boundary Quantum Field Theory Renormalization Group Scale and Conformal Symmetries |
| url | https://doi.org/10.1007/JHEP03(2025)147 |
| work_keys_str_mv | AT vladimirbashmakov exploringdefectswithdegreesoffreedominfreescalarcfts AT jacoposisti exploringdefectswithdegreesoffreedominfreescalarcfts |