TY - JOUR
T1 - Massive higher spin states in string theory and gravitational quadrupoles
AU - Giannakis, Ioannis
AU - Liu, James T.
AU - Porrati, Massimo
PY - 1999/5/15
Y1 - 1999/5/15
N2 - In this paper we study three point functions of the type II superstring involving one graviton and two massive states, focusing in particular on the spin-7/2 fermions at the first mass level. Defining a gravitational quadrupole "h factor," we find that the nonminimal interactions of string states in general are parametrized by h ≠ 1, in contrast with the preferred field theory value of h = 1 (for tree-level unitarity). This difference arises from the fact that consistent gravitational interactions of strings are related to the presence of a complete tower of massive states, not present in the ordinary field theory case.
AB - In this paper we study three point functions of the type II superstring involving one graviton and two massive states, focusing in particular on the spin-7/2 fermions at the first mass level. Defining a gravitational quadrupole "h factor," we find that the nonminimal interactions of string states in general are parametrized by h ≠ 1, in contrast with the preferred field theory value of h = 1 (for tree-level unitarity). This difference arises from the fact that consistent gravitational interactions of strings are related to the presence of a complete tower of massive states, not present in the ordinary field theory case.
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U2 - 10.1103/PhysRevD.59.104013
DO - 10.1103/PhysRevD.59.104013
M3 - Article
AN - SCOPUS:17044436900
SN - 0556-2821
VL - 59
SP - 1
EP - 8
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 10
M1 - 104013
ER -