TY - JOUR
T1 - Operator construction of ghost g-vacuum, handle operator and BRST-invariant multiloop amplitude of the bosonic string
AU - Carow-Watamura, Ursula
AU - Ezawa, Zyun F.
AU - Tezuka, Akinori
AU - Watamura, Satoshi
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1989/5/4
Y1 - 1989/5/4
N2 - Applying the Feynman-like rules in the operator formalism with bosonized bc-ghost, we construct the g-loop, N-string vertex out of three-string vertices and propagators. The measure factor is analyzed in detail. It is shown that a part of the ghost contribution can be represented by using g 2-differential cand Riemann constants. The resulting measure factor is represented by the ghost g-vacuum with the b-ghost insertion accompanied by a contour integration. This contour integration can be performed explicitly in the one-loop case, in which we reproduce the well-known formula of the one-loop N-tachyon amplitude.
AB - Applying the Feynman-like rules in the operator formalism with bosonized bc-ghost, we construct the g-loop, N-string vertex out of three-string vertices and propagators. The measure factor is analyzed in detail. It is shown that a part of the ghost contribution can be represented by using g 2-differential cand Riemann constants. The resulting measure factor is represented by the ghost g-vacuum with the b-ghost insertion accompanied by a contour integration. This contour integration can be performed explicitly in the one-loop case, in which we reproduce the well-known formula of the one-loop N-tachyon amplitude.
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U2 - 10.1016/0370-2693(89)91714-0
DO - 10.1016/0370-2693(89)91714-0
M3 - Article
AN - SCOPUS:0041066411
VL - 221
SP - 299
EP - 306
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 3-4
ER -