Abstract
In the previous chapter, we built the off-shell amplitudes by integrating forms on sections of \(\mathcal P_{g,n}\). Studying their factorizations leads to rewrite them in terms of Feynman diagrams, which allows to identify the fundamental interactions’ vertices. We will then be able to write the SFT action in the next chapter.
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Notes
- 1.
To make this identification precise for vertices involving external states, one has to consider the non-amputated Green functions.
References
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Erbin, H. (2021). Amplitude Factorization and Feynman Diagrams. In: String Field Theory. Lecture Notes in Physics, vol 980. Springer, Cham. https://doi.org/10.1007/978-3-030-65321-7_14
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DOI: https://doi.org/10.1007/978-3-030-65321-7_14
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