ESSAY: The Cosmological Constant Problem in Brane-Worlds and Gravitational Lorentz Violations

@article{Cski2001ESSAYTC,
  title={ESSAY: The Cosmological Constant Problem in Brane-Worlds and Gravitational Lorentz Violations},
  author={C. Cs{\'a}ki and J. Erlich and C. Grojean},
  journal={General Relativity and Gravitation},
  year={2001},
  volume={33},
  pages={1921-1927}
}
Brane worlds are theories with extra spatial dimensions in which ordinary matter is localized on a (3+1) dimensional submanifold. Such theories could have interesting consequences for particle physics and gravitational physics. In this essay we concentrate on the cosmological constant (CC) problem in the context of brane worlds. We show how extra-dimensional scenarios may violate Lorentz invariance in the gravity sector of the effective 4D theory, while particle physics remains unaffected. In… Expand