Factorization and Unitarity in Superstring Theory
arXiv:hep-th/0503248 · doi:10.1088/1126-6708/2005/08/058
Abstract
The overall coefficient of the two-loop 4-particle amplitude in superstring theory is determined by making use of the factorization and unitarity. To accomplish this we computed in detail all the relevant tree and one-loop amplitudes involved and determined their overall coefficients in a consistent way.
LaTex file, 19 pages, 4 figures; v2, minor corrections and figures corrected; v3, minor corrections with the English, to be published in JHEP
References in corpus (19)
- Effects of D-instantons
- Two-Loop Four-Gluon Amplitudes in N=4 Super-Yang-Mills
- Perturbative Quantum Gravity and its Relation to Gauge Theory
- Two-Loop Superstrings VI: Non-Renormalization Theorems and the 4-Point Function
- Two-Loop Superstrings I, Main Formulas
- Two-Loop Superstrings II, The Chiral Measure on Moduli Space
- Two-loop superstrings and S-duality
- Two-Loop Superstrings IV, The Cosmological Constant and Modular Forms
- Two-Loop Superstrings III, Slice Independence and Absence of Ambiguities
- Two-Loop Superstrings V: Gauge Slice Independence of the N-Point Function
- Asyzygies, modular forms, and the superstring measure II
- Explicit Modular Invariant Two-Loop Superstring Amplitude Relevant for R^4
- Asyzygies, modular forms, and the superstring measure I
- Computing the R^4 term at two Superstring Loops
- Two-Loop Superstrings in Hyperelliptic Language I: the Main Results
- Two-Loop Superstrings in Hyperelliptic Language III: the Four-Particle Amplitude
- Covariant Multiloop Superstring Amplitudes
- Comments on Two-Loop Four-Particle Amplitude in Superstring Theory
- Factorization of the Two Loop Four-Particle Amplitude in Superstring Theory Revisited