Branon stabilization from fermion-induced radiative corrections
arXiv:0812.1307 · doi:10.1016/j.physletb.2009.05.003
Abstract
We consider a 3-brane embedded in 5-dimensional space time characterized by a Gaussian warp factor, for which the four-dimensional effective theory for brane fluctuation (branons) is unstable. We show that radiative corrections arising from fermions living on the brane, and therefore coupled to branons, stabilize the system by generating dynamically a spontaneous symmetry breaking for the branon field. The price to pay, for the corresponding mechanism to be consistent, is to have a large number of fermion flavours, and we discuss the fat brane scenario as an interpretation for the dressed branon theory, taking into account the Maxwell construction, which avoids the spinodal instability present in the perturbative effective potential.
7 pages
References in corpus (13)
- Phenomenology, Astrophysics and Cosmology of Theories with Sub-Millimeter Dimensions and TeV Scale Quantum Gravity
- Brane cosmology: an introduction
- Brane fluctuations and suppression of Kaluza-Klein mode couplings
- Instability Induced Renormalization
- The dynamics of the Goldstone bosons on the brane
- Probing extra dimensions using Nambu-Goldstone bosons
- Brane-skyrmions and wrapped states
- The Seesaw with Many Right-Handed Neutrinos
- Coleman-Weinberg Mechanism and Interaction of D3-Branes in Type 0 String Theory
- Probing Brane-World Scenarios with Vacuum Refraction of Light Using Gamma-Ray Bursts
- Matrix Sigma-models for Multi D-brane Dynamics
- Tree-level renormalization
- Probe Brane Dynamics and the Cosmological Constant