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Journal Article

Achieving effective positive action in supergravity

MPS-Authors
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Nicolai,  Hermann
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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351050.pdf
(Publisher version), 313KB

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Citation

Deser, S., & Nicolai, H. (1981). Achieving effective positive action in supergravity. Physics Letters B, 103(1), 25-28. doi:10.1016/0370-2693(81)90186-6.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-5E73-B
Abstract
The path integral for the gravity sector of supergravity, i.e., after integration over the spin-3/2 field, is formally shown to be governed by the linearized Einstein action in terms of redefined field variables. The exponential of the action now being a product of gaussians, positivity of the action in euclidean signature is simply achieved by analytic continuation in those field components whose squares initially appear with the wrong sign.