Details
| Original language | English |
|---|---|
| Pages (from-to) | 82-106 |
| Number of pages | 25 |
| Journal | Nuclear Physics, Section B |
| Volume | 322 |
| Issue number | 1 |
| Publication status | Published - 7 Aug 1989 |
| Externally published | Yes |
Abstract
We show the off-shell vanishing of all massless two-loop amplitudes with less than four particles for closed superstrings in ten-dimensional flat spacetime. This is achieved by employing a non-singular, unitary gauge in the period matrix representation of the Polyakov path integral. Locating the picture-changing operators at the zeroes of a particular holomorphic one-form allows us to sum over spin structures by virtue of the Riemann identity. We test our results in the factorization limit and comment on the structure of the two-loop four-point function.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Nuclear and High Energy Physics
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In: Nuclear Physics, Section B, Vol. 322, No. 1, 07.08.1989, p. 82-106.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - On the finiteness of the superstring
AU - Lechtenfeld, Olaf
N1 - Copyright: Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1989/8/7
Y1 - 1989/8/7
N2 - We show the off-shell vanishing of all massless two-loop amplitudes with less than four particles for closed superstrings in ten-dimensional flat spacetime. This is achieved by employing a non-singular, unitary gauge in the period matrix representation of the Polyakov path integral. Locating the picture-changing operators at the zeroes of a particular holomorphic one-form allows us to sum over spin structures by virtue of the Riemann identity. We test our results in the factorization limit and comment on the structure of the two-loop four-point function.
AB - We show the off-shell vanishing of all massless two-loop amplitudes with less than four particles for closed superstrings in ten-dimensional flat spacetime. This is achieved by employing a non-singular, unitary gauge in the period matrix representation of the Polyakov path integral. Locating the picture-changing operators at the zeroes of a particular holomorphic one-form allows us to sum over spin structures by virtue of the Riemann identity. We test our results in the factorization limit and comment on the structure of the two-loop four-point function.
UR - http://www.scopus.com/inward/record.url?scp=0001806094&partnerID=8YFLogxK
U2 - 10.1016/0550-3213(89)90486-0
DO - 10.1016/0550-3213(89)90486-0
M3 - Article
AN - SCOPUS:0001806094
VL - 322
SP - 82
EP - 106
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
SN - 0550-3213
IS - 1
ER -