Gauge-invariant action for free string field theory with boundary
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866914312981839872 |
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| author | Maccaferri, Carlo Ruffino, Alberto Vošmera, Jakub |
| author_facet | Maccaferri, Carlo Ruffino, Alberto Vošmera, Jakub |
| contents | We construct fully gauge-invariant kinetic terms for open and closed string field theories on a target space with boundary. This is realized by promoting the gauge parameters at the boundary to extra dynamical modes describing boundary degrees of freedom. Having a gauge-invariant classical action, we also construct the corresponding BV master action and show that the master equation is obeyed thanks to a peculiar nilpotent structure of the BV kinetic operator. From this general construction we explicitly derive free actions for massless and massive modes of open and closed strings propagating on a target with a boundary, including linear-dilaton backgrounds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_05969 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Gauge-invariant action for free string field theory with boundary Maccaferri, Carlo Ruffino, Alberto Vošmera, Jakub High Energy Physics - Theory We construct fully gauge-invariant kinetic terms for open and closed string field theories on a target space with boundary. This is realized by promoting the gauge parameters at the boundary to extra dynamical modes describing boundary degrees of freedom. Having a gauge-invariant classical action, we also construct the corresponding BV master action and show that the master equation is obeyed thanks to a peculiar nilpotent structure of the BV kinetic operator. From this general construction we explicitly derive free actions for massless and massive modes of open and closed strings propagating on a target with a boundary, including linear-dilaton backgrounds. |
| title | Gauge-invariant action for free string field theory with boundary |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2506.05969 |