{ "id": "2403.18078", "version": "v1", "published": "2024-03-26T19:58:25.000Z", "updated": "2024-03-26T19:58:25.000Z", "title": "Advanced tools for basis decompositions of genus-one string integrals", "authors": [ "Yong Zhang" ], "comment": "44+9 pages, 9 figures", "categories": [ "hep-th" ], "abstract": "In string theories, one-loop scattering amplitudes are characterized by integrals over genus-one surfaces using the Kronecker-Eisenstein series. A recent methodology proposed a genus-one basis formed from products of these series of chain topologies. A prior work further deconstructed cyclic products of the Kronecker-Eisenstein series on this basis. Building on it, our study further employs advanced and comprehensive combinatorial techniques to decompose more general genus-one integrands including a product of an arbitrary number of cyclic products of Kronecker-Eisenstein series, supplemented by {\\tt Mathematica} codes. Our insights enhance the understanding of multiparticle amplitudes across various string theories and illuminate loop-level parallels with string tree-level amplitudes.", "revisions": [ { "version": "v1", "updated": "2024-03-26T19:58:25.000Z" } ], "analyses": { "keywords": [ "genus-one string integrals", "basis decompositions", "advanced tools", "kronecker-eisenstein series", "cyclic products" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable" } } }