Prescriptions for Off-Shell Bosonic String Amplitudes

Abstract

We give, in the framework of the bosonic string theory, simple prescriptions for computing, at tree and one-loop levels, off-shell string amplitudes for open and closed string massless states. In particular we obtain a tree amplitude for three open strings that in the field theory limit coincides with the three-gluon vertex in the usual covariant gauge and two-string one-loop amplitudes satisfying the property of transversality.

11 pages, LaTeX, to appear in the proceedings of the workshop "Quantum Aspects of Gauge Theories, Supersymmetry and Unification", Corfu (Greece), 20-26 September 1998. Eq. (12) and numerical factors in eqs. (13) and (16) corrected; some minor changes and references added

References in corpus (6)

• Dirichlet-Branes and Ramond-Ramond Charges
• String techniques for the calculation of renormalization constants in field theory
• Multiloop World-Line Green Functions from String Theory
• Consistent Off-Shell Tree String Amplitudes
• D-Branes and Physical States
• On off-shell bosonic string amplitudes

Cited by in corpus (4)

• Wilson Loops and QCD/String Scattering Amplitudes
• Effective String Theory and QCD Scattering Amplitudes
• Semiclassical Regge trajectories of noncritical string and large-N QCD
• On the gauge chosen by the bosonic open string