BRST-invariant nonplanar primitive operators in the open-bosonic-string theory

Journal Article · Fri Mar 15 00:00:00 EST 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.43.1901· OSTI ID:5754300

Kobayashi, T; Konno, H; Suzuki, T ^[1]

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1. Institute of Physics, University of Tsukuba, Ibaraki 305, Japan (JP)

We investigate nonplanar operators in the open-bosonic-string theory by means of the covariant operator formalism based on the Becchi-Rouet-Stora-Tyutin (BRST) formulation. The detailed evaluations of two nonplanar primitive operators, that is, nonplanar self-energy and nonplanar two-loop tadpole, are presented. At the one-loop level, we show that the ghost contribution yields a right measure factor to the physical amplitude. For the nonplanar two-loop tadpole operator, we discuss the factorization of the nonplanar self-energy. In order to avoid multiple countings, the integration regions are suitably restricted by investigating the duality of the 5-Reggeon vertex and the periodicity of the nonplanar self-energy operator. We also argue that only one singularity associated with the nonplanar self-energy part occurs in the nonplanar two-loop tadpole.

• OSTI ID: 5754300
• Journal Information: Physical Review, D (Particles Fields); (USA), Vol. 43:6; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
STRING MODELS
DUALITY
PERTURBATION THEORY
PROPAGATOR
SELF-ENERGY
UNITARITY
COMPOSITE MODELS
ENERGY
EXTENDED PARTICLE MODEL
MATHEMATICAL MODELS
PARTICLE MODELS
QUARK MODEL
645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties