Two-loop scalar diagrams from string theory

Paolo Di Vecchia; Lorenzo Magnea; Alberto Lerda; Raffaele Marotta; Rodolfo Russo

doi:10.1016/0370-2693(96)01137-9

Two-loop scalar diagrams from string theory

Paolo Di Vecchia, Lorenzo Magnea, Alberto Lerda, Raffaele Marotta, Rodolfo Russo

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

We show how to obtain correctly normalized expressions for the Feynman diagrams of Φ³ theory with an internal U (N) symmetry group, starting from tachyon amplitudes of the open bosonic string, and suitably performing the zero-slope limit by giving an arbitrary mass m to the tachyon. In particular we present explicit results for the two-loop amplitudes of Φ³ theory, in preparation for the more interesting case of multiloop amplitudes of non-abelian gauge theories.

Lingua originale	Inglese
pagine (da-a)	65-76
Numero di pagine	12
Rivista	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	388
Numero di pubblicazione	1
DOI	https://doi.org/10.1016/0370-2693(96)01137-9
Stato di pubblicazione	Pubblicato - 7 nov 1996
Pubblicato esternamente	Sì

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abstract = "We show how to obtain correctly normalized expressions for the Feynman diagrams of Φ3 theory with an internal U (N) symmetry group, starting from tachyon amplitudes of the open bosonic string, and suitably performing the zero-slope limit by giving an arbitrary mass m to the tachyon. In particular we present explicit results for the two-loop amplitudes of Φ3 theory, in preparation for the more interesting case of multiloop amplitudes of non-abelian gauge theories.",

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AU - Magnea, Lorenzo

AU - Lerda, Alberto

AU - Marotta, Raffaele

AU - Russo, Rodolfo

PY - 1996/11/7

Y1 - 1996/11/7

N2 - We show how to obtain correctly normalized expressions for the Feynman diagrams of Φ3 theory with an internal U (N) symmetry group, starting from tachyon amplitudes of the open bosonic string, and suitably performing the zero-slope limit by giving an arbitrary mass m to the tachyon. In particular we present explicit results for the two-loop amplitudes of Φ3 theory, in preparation for the more interesting case of multiloop amplitudes of non-abelian gauge theories.

AB - We show how to obtain correctly normalized expressions for the Feynman diagrams of Φ3 theory with an internal U (N) symmetry group, starting from tachyon amplitudes of the open bosonic string, and suitably performing the zero-slope limit by giving an arbitrary mass m to the tachyon. In particular we present explicit results for the two-loop amplitudes of Φ3 theory, in preparation for the more interesting case of multiloop amplitudes of non-abelian gauge theories.

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Two-loop scalar diagrams from string theory

Abstract

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