Casimir Energy and Brane Stability
arXiv:0810.1096 · doi:10.1016/j.geomphys.2010.11.006
Abstract
We investigate the role of Casimir energy as a mechanism for brane stability in five-dimensional models with the fifth dimension compactified on an S^1\Z_2 orbifold, which includes the Randall-Sundrum two brane model (RS1). We employ a zeta-function regularization technique utilizing the Schwinger proper time method and the Jacobi theta function identity to calculate the one-loop effective potential. We show that the combination of the Casimir energies of a scalar Higgs field, the three generations of Standard Model fermions and one additional massive non-SM scalar in the bulk produce a non-trivial minimum of the potential. In particular, we consider a scalar field with a coupling in the bulk to a Lorentz violating vector particle localized to the compactified dimension. Such a scalar may provide a natural means of the fine-tuning needed for stabilization of the brane spearation. Lastly, we briefly review the possibility that Casimir energy plays a role in generating the currently observed epoch of cosmological inflation by examining a simple five-dimensional anisotropic metric.
23 pages, 7 figures, 1 table
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- Quantum vacuum effects in braneworlds on AdS bulk
- Investigation into Compactified Dimensions: Casimir Energies and Phenomenological Aspects
- Casimir densities in brane models with compact internal spaces
- On The Problem of Vacuum energy in Brane Theories
- Quantum vacuum under mixed boundary conditions: the case for curved spacetime
- Casimir energy of hyperbolic orbifolds with conical singularities
- Electromagnetic Wightman functions and vacuum densities for a brane intersecting the AdS boundary
- Æther Coupling Effects on Casimir Energy for Self-Interacting Scalar Field within Extra Dimension