Gauge fixing and residual symmetries in gauge/gravity theories with extra dimensions
- Department of Physics, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501 (Japan)
- Anan National College of Technology, 265 Aoki, Minobayashi, Anan 774-0017 (Japan)
- Graduate School of Science, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501 (Japan)
We study compactified pure gauge/gravitational theories with gauge-fixing terms and show that these theories possess quantum mechanical supersymmetriclike symmetries between unphysical degrees of freedom. These residual symmetries are global symmetries and generated by quantum mechanical N=2 supercharges. Also, we establish a new one-parameter family of gauge choices for higher-dimensional gravity and calculate as a check of its validity one graviton exchange amplitude in the lowest tree-level approximation. We confirm that the result is indeed {xi} independent and the cancellation of the {xi} dependence is ensured by the residual symmetries. We also give a simple interpretation of the van Dam-Veltman-Zakharov discontinuity, which arises in the lowest tree-level approximation, from the supersymmetric point of view.
- OSTI ID:
- 21249862
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 77, Issue 6; Other Information: DOI: 10.1103/PhysRevD.77.065009; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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