Dilation condensates and loop effects in open and closed bosonic strings

Sumit R. Das; Soo Jong Rey

doi:10.1016/0370-2693(87)90303-0

Dilation condensates and loop effects in open and closed bosonic strings

Sumit R. Das, Soo Jong Rey

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

Consistent string propagation in general backgrounds requires conformal invariance. At the tree level, this requires Gell- Mann-Low β functions for the geometric couplings to vanish. We study the higher loop/hole effects on string amplitudes in a background spacetime in the context of oriented open and closed bosonic strings. We show that leading divergences can be made to cancel up to O(g⁰) (i.e., up to genus one) in string perturbations by a Fischler-Susskind-type mechanism. The consistent background depends on the gauge group chosen. This may lead to finite type-I superstring theories with gauge groups other than SO(32).

Original language	English
Pages (from-to)	328-338
Number of pages	11
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	186
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(87)90303-0
State	Published - Mar 12 1987

Bibliographical note

Funding Information:
~rWork supported in part by the US Department of Energy under Contract No. DEAC-03-8I -ER40050. KFAS Fellow. ~l Actuallyt his requirement leads to both the vertex operator condition and the beta-function conditions, as shown by Jain et al. \[6\].

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/0370-2693(87)90303-0

Cite this

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abstract = "Consistent string propagation in general backgrounds requires conformal invariance. At the tree level, this requires Gell- Mann-Low β functions for the geometric couplings to vanish. We study the higher loop/hole effects on string amplitudes in a background spacetime in the context of oriented open and closed bosonic strings. We show that leading divergences can be made to cancel up to O(g0) (i.e., up to genus one) in string perturbations by a Fischler-Susskind-type mechanism. The consistent background depends on the gauge group chosen. This may lead to finite type-I superstring theories with gauge groups other than SO(32).",

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AU - Rey, Soo Jong

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AB - Consistent string propagation in general backgrounds requires conformal invariance. At the tree level, this requires Gell- Mann-Low β functions for the geometric couplings to vanish. We study the higher loop/hole effects on string amplitudes in a background spacetime in the context of oriented open and closed bosonic strings. We show that leading divergences can be made to cancel up to O(g0) (i.e., up to genus one) in string perturbations by a Fischler-Susskind-type mechanism. The consistent background depends on the gauge group chosen. This may lead to finite type-I superstring theories with gauge groups other than SO(32).

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Dilation condensates and loop effects in open and closed bosonic strings

Abstract

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