Abstract
While the previous chapter was purely geometrical, this one makes contact with string theory through the worldsheet CFT. We continue the description of \(\mathcal P_{g,n}\) by constructing p-forms. The reason why we need to consider the CFT is that ghosts are necessary to build the p-forms: this can be understood from Chap. 2, where we found that the ghosts must be interpreted as part of the measure on the moduli space. Then, we build the off-shell amplitudes and discuss some properties.
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Notes
- 1.
The current argument does not apply for on-shell amplitudes.
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Erbin, H. (2021). Off-Shell Amplitudes. In: String Field Theory. Lecture Notes in Physics, vol 980. Springer, Cham. https://doi.org/10.1007/978-3-030-65321-7_13
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DOI: https://doi.org/10.1007/978-3-030-65321-7_13
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