Bent domain walls as braneworlds
Abstract
We consider domain walls embedded in curved backgrounds as an approximation for braneworld scenarios. We give a large class of new exact solutions, exausting the possibilities for describing one and two walls for the cases where the curvature of both the bulk and the wall are locally constant. In the case of two walls, we find solutions where each wall has positive tension. An interesting property of these solutions is that the curvature of the walls can be much smaller than the tension, leading to a significant cancellation of the effective cosmological constant, which however is still much larger than the observational limits. We further discuss some aspects of inflation in models based on wall solutions.
- Publication:
-
Physical Review D
- Pub Date:
- December 1999
- DOI:
- 10.1103/PhysRevD.60.123506
- arXiv:
- arXiv:hep-th/9905210
- Bibcode:
- 1999PhRvD..60l3506K
- Keywords:
-
- 98.80.Cq;
- Particle-theory and field-theory models of the early Universe;
- High Energy Physics - Theory;
- Astrophysics;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Phenomenology
- E-Print:
- 26 pages, latex, no figures, corrected few typos, as accepted for publication in Phys. Rev. D