Propagating modes in gauge field theories of gravity |
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| Authors: | R Kuhfuss J Nitsch |
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| Institution: | (1) Max-Planck-Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, 8046 Garching, Federal Republic of Germany;(2) Institute for Theoretical Physics, University of Cologne, Zülpicher Strasse 77, 5000 Köln 41, Federal Republic of Germany |
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| Abstract: | The particle content of the most general quadratic field Lagrangian for Poincaré gauge field theories is examined and restrictions on the coupling constants for absence of ghosts and tachyons are derived. Our final field Lagrangian contains three coupling constants, the usual gravitational constant in front of an Einsteinian part and two other constants governing pure torsion terms. |
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