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| Author(s): |
Rafael Robson Lino dos Santos
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Guaratinguetá. 2020-08-12. |
| Institution: | Universidade Estadual Paulista (Unesp). Faculdade de Engenharia. Guaratinguetá |
| Defense date: | 2020-07-29 |
| Advisor: | Denis Dalmazi |
| Abstract | |
In this thesis, we study the so-called linearized TDiff model, which is invariant under transverse diffeomorphisms and describes spin-2 and spin-0 propagation modes. We explore Kaluza-Klein dimensional reduction to obtain a D-dimensional massive model from TDiff in D+1 dimensions. This massive extension is a scalar-tensor description propagating massive spin-2 and spin-0 modes, and whose massless limit is invariant under diffeomorphisms (Diff). Then, we generalize the discussion to curved backgrounds, and conclude that Einstein spaces are always required to consistently describe linearized scalar-tensor models and it is possible to obtain models whose massless limit is invariant only under TDiff due to the presence of non-minimal curvature terms. (AU) | |
| FAPESP's process: | 18/24767-2 - Transverse diffeomorphisms and spin-2 particles |
| Grantee: | Rafael Robson Lino dos Santos |
| Support Opportunities: | Scholarships in Brazil - Master |