New braneworld models in the presence of auxiliary fields
arXiv:1412.0135 · doi:10.1016/j.aop.2015.07.017
Abstract
We study braneworld models in the presence of auxiliary fields. We use the first-order framework to investigate several distinct possibilities, where the standard braneworld scenario changes under the presence of the parameter that controls the auxiliary fields introduced to modify Einstein's equation. The results add to previous ones, to show that the minimal modification that we investigate contributes to change quantitatively the thick braneworld profile, although no new qualitative effect is capable of being induced by the minimal modification here considered.
10 pages, 11 figures; version to appear in Annals of Physics
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- From sine-Gordon to vacuumless systems in flat and curved spacetimes
- First order formalism for thick branes in modified gravity with Lagrange multiplier
- Configurational entropy of generalized sine-Gordon-type models
- Stability in higher-derivative matter fields theories