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A proposal for covariant renormalizable field theory of gravity |
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| Authors: | Shin'ichi Nojiri Sergei D Odintsov |
| Institution: | 1. Department of Physics, Nagoya University, Nagoya 464-8602, Japan;2. Kobayashi-Maskawa Institute for the Origin of Particles and the Universe2, Nagoya University, Nagoya 464-8602, Japan;3. Instituciò Catalana de Recerca i Estudis Avançats (ICREA) and Institut de Ciencies de l''Espai (IEEC-CSIC), Campus UAB, Facultat de Ciencies, Torre C5-Par-2a pl, E-08193 Bellaterra (Barcelona), Spain |
| Abstract: | The class of covariant gravity theories which have nice ultraviolet behavior and seem to be (super)-renormalizable is proposed. The apparent breaking of Lorentz invariance occurs due to the coupling with the effective fluid which is induced by Lagrange multiplier constrained scalar field. Spatially-flat FRW cosmology for such covariant field gravity may have accelerating solutions. Renormalizable versions of more complicated modified gravity which depends on Riemann and Ricci tensor squared may be constructed in the same way. |
| Keywords: | Quantum gravity String theory |
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