Off-shell amplitudes for open bosonic strings

Journal Article · Mon Feb 15 04:00:00 EST 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.37.981· OSTI ID:5583058

Varughese, C; Weisberger, W I

An extension of the Polyakov path-integral formulation to compute off-shell amplitudes for open bosonic strings is derived. Boundary conditions require evaluating the path integral on open surfaces with corners on the boundaries. The contribution to the topological term in the action from the corners is exactly that required for unitarity. The presence of corners introduces a Weyl anomaly in the Polyakov measure. This requires a gauge-fixing procedure for the off-shell amplitudes. Consistent factorization of amplitudes with one or two off-shell strings and any number of on-shell tachyons is established.

• Research Organization: Institute for Theoretical Physics, State University of New York at Stony Brook, Stony Brook, New York 11794-3840
• OSTI ID: 5583058
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 37:4; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSONS
BOUNDARY CONDITIONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FEYNMAN PATH INTEGRAL
INTEGRALS
MATHEMATICAL MODELS
NUCLEAR MODELS
PARTICLE MODELS
POSTULATED PARTICLES
PROPAGATOR
QUARK MODEL
SCATTERING AMPLITUDES
SHELL MODELS
SPACE-TIME
STRING MODELS
TACHYONS
UNITARITY