1. Cosmology in delta-gravity.
- Author
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Alfaro, Jorge and González, Pablo
- Subjects
- *
METAPHYSICAL cosmology , *EXPANDING universe , *GRAVITATIONAL fields , *GENERAL relativity (Physics) , *GRAVITY , *DARK energy , *QUANTIZATION (Physics) , *GEODESICS - Abstract
We present a model of the gravitational field based on two symmetric tensors. Gravity is affected by the new field, but if Tμv = 0, the predictions of the model coincide exactly with general relativity, so all classical tests are satisfied. We find that massive particles do not follow a geodesic, while massless particles trajectories are null geodesics of an effective metric. We study the cosmological case, where we obtain an accelerated expansion of the Universe without dark energy. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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