Muthuswamy Sivakumar | School of Physics University of Hyderabad - Índia
Hamilton (Jacobi) formulation of the dark sector of the universe and contextualize...
| Full text | |
| Author(s): |
Rivelles, Victor O.
[1]
Total Authors: 1
|
| Affiliation: | [1] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | Classical and Quantum Gravity; v. 31, n. 2 JAN 21 2014. |
| Web of Science Citations: | 4 |
| Abstract | |
The theta expansion of the Seiberg-Witten map has ambiguities which can be removed by a gauge transformation and/or a field redefinition. In the context of emergent gravity such a field redefinition changes the emerging metric and requires the presence of non-minimal gravitational couplings. It also requires that a real scalar field becomes a scalar density and allows the introduction of a potential. We also find that the potential can have only one term and that a quartic interaction is not allowed. Even though the metric depends on the ambiguity we show that the dispersion relation does not present any sign of it. A proposal for an exact Seiberg-Witten map is used to derive the full metric going beyond the linearized limit. (AU) | |
| FAPESP's process: | 08/05343-5 - Quantum gravity |
| Grantee: | Victor de Oliveira Rivelles |
| Support Opportunities: | Research Projects - Thematic Grants |