Journal of High Energy Physics

, 2011:103

On factorizations in perturbative quantum gravity

Article

DOI: 10.1007/JHEP04(2011)103

Cite this article as:
Hohm, O. J. High Energ. Phys. (2011) 2011: 103. doi:10.1007/JHEP04(2011)103

Abstract

Some features of Einstein gravity are most easily understood from string theory but are not manifest at the level of the usual Lagrangian formulation. One example is the factorization of gravity amplitudes into gauge theory amplitudes. Based on the recently constructed ‘double field theory’ and a geometrical frame-like formalism developed by Siegel, we provide a framework of perturbative Einstein gravity coupled to a 2-form and a dilaton in which, as a consequence of T-duality, the Feynman rules factorize to all orders in perturbation theory. We thereby establish the precise relation between the field variables in different formulations and discuss the Lagrangian that, when written in terms of these variables, makes a left-right factorization manifest.

Keywords

Models of Quantum Gravity Gauge Symmetry Space-Time Symmetries Global Symmetries 

Copyright information

© SISSA, Trieste, Italy 2011

Authors and Affiliations

  1. 1.Center for Theoretical PhysicsMassachusetts Institute of TechnologyCambridgeU.S.A.

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