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Ghost properties of generalized theories of gravitation

Journal Article · · Phys. Rev. D; (United States)
;

We investigate theories of gravitation, in which spacetime is non-Riemannian and the metric g/sub munu/ is nonsymmetric, for ghosts and tachyons, using a spin-projection operator formalism. Ghosts are removed not by gauge invariance but by a Lagrange multiplier W/sub ..mu../, which occurs due to the breaking of projective invariance in the theory. Unified theories based on a Lagrangian containing a term lambdag/sup munu/g/sub / are proved to contain ghosts or tachyons.

Research Organization:
Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7
OSTI ID:
6898430
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 26:8; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

657003* -- Theoretical & Mathematical Physics-- Relativity & Gravitation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELEMENTARY PARTICLES
FUNCTIONS
GRAVITATION
LAGRANGIAN FUNCTION
MATHEMATICAL MODELS
METRICS
PARTICLE MODELS
POSTULATED PARTICLES
SPACE-TIME
TACHYONS
UNIFIED GAUGE MODELS