Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2000-02-10
Nucl.Phys.Proc.Suppl.88:194-203,2000
Physics
High Energy Physics
High Energy Physics - Theory
Talk presented at Third Meeting on Constrained Dynamics and Quantum Gravity, Villasimius (Sardinia, Italy) September 13-17, 19
Scientific paper
10.1016/S0920-5632(00)00768-4
We review some applications of tree-level (classical) relations between gravity and gauge theory that follow from string theory. Together with $D$-dimensional unitarity, these relations can be used to perturbatively quantize gravity theories, i.e. they contain the necessary information for obtaining loop contributions. We also review recent applications of these ideas showing that N=1 D=11 supergravity diverges, and review arguments that N=8 D=4 supergravity is less divergent than previously thought, though it does appear to diverge at five loops. Finally, we describe field variables for the Einstein-Hilbert Lagrangian that help clarify the perturbative relationship between gravity and gauge theory.
Bern Zvi
Dixon Lance
Dunbar David C.
Grant Aaron K.
Perelstein Maxim
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