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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2408.00658 |
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| _version_ | 1866909276355690496 |
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| author | Maccaferri, Carlo Ruffino, Alberto Vošmera, Jakub |
| author_facet | Maccaferri, Carlo Ruffino, Alberto Vošmera, Jakub |
| contents | We consider computing the on-shell disk action of open-closed string field theory as a gauge-invariant way of capturing the shift in D-brane tension that is induced by a deformation of the bulk CFT. We study the effect of bulk matter deformations (both marginal and relevant) on a wide range of boundary conditions in a number of CFTs up to subleading (two-loop) order in perturbation theory. In all analyzed examples, we find that the shift in the $g$-function of the matter boundary state is always accompanied by a boundary-independent shift in the string coupling constant, whose leading behaviour is universally proportional to the sphere two-point function of the deforming bulk operator. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_00658 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Bulk-induced D-brane deformations and the string coupling constant Maccaferri, Carlo Ruffino, Alberto Vošmera, Jakub High Energy Physics - Theory We consider computing the on-shell disk action of open-closed string field theory as a gauge-invariant way of capturing the shift in D-brane tension that is induced by a deformation of the bulk CFT. We study the effect of bulk matter deformations (both marginal and relevant) on a wide range of boundary conditions in a number of CFTs up to subleading (two-loop) order in perturbation theory. In all analyzed examples, we find that the shift in the $g$-function of the matter boundary state is always accompanied by a boundary-independent shift in the string coupling constant, whose leading behaviour is universally proportional to the sphere two-point function of the deforming bulk operator. |
| title | Bulk-induced D-brane deformations and the string coupling constant |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2408.00658 |