Spectra of Field Fluctuations in Braneworld Models with Broken Bulk Lorentz Invariance

Understand

We investigate five-dimensional braneworld setups with broken Lorentz invariance continuing the developments of our previous paper (arXiv:0712.1136), where a family of static self-tuning braneworld solutions was found.

• We show that several known braneworld models can be embedded into this family.
• Then we give a qualitative analysis of spectra of field fluctuations in backgrounds with broken Lorentz invariance.
• We also elaborate on one particular model and study spectra of scalar and spinor fields in it.