Bibliographic Details
| Title: |
Superstring amplitudes from BCJ numerators at one loop |
| Authors: |
Geyer, Yvonne, Guo, Jiachen, Monteiro, Ricardo, Ren, Lecheng |
| Publication Year: |
2024 |
| Collection: |
High Energy Physics - Theory |
| Subject Terms: |
High Energy Physics - Theory |
| More Details: |
We find a direct map that determines moduli-space integrands for one-loop superstring amplitudes in terms of field-theory loop integrands in the BCJ form. The latter can be computed using efficient unitarity methods, so our map provides an alternative to worldsheet CFT techniques. This construction is a one-loop higher-point analogue of a recent conjecture for the three-loop four-point superstring amplitude. Based on the one-loop chiral-splitting representation, we show how all coefficients of an ansatz for the superstring can be identified with field-theory BCJ numerators, up to at least 7-point amplitudes. Moreover, we obtain partial results for all higher-point amplitudes. The monodromy constraints associated to chiral splitting play a crucial role in determining coefficients of the ansatz that, naively, are not fixed by the field-theory limit. Taking a field-theory perspective, our ansatz for the superstring implies by construction the existence of one-loop BCJ numerators at any multiplicity.
Comment: 33 pages, 3 figures. v2: minor changes, published version |
| Document Type: |
Working Paper |
| Access URL: |
http://arxiv.org/abs/2410.19663 |
| Accession Number: |
edsarx.2410.19663 |
| Database: |
arXiv |
