2009/04/12 by V. B. Bezerra, Cristine Nunes Ferreira, C. N. Ferreira +2
Physics and Astronomy · #Black Holes and Theoretical Physics #Boson #Brane #Brans–Dicke theory #Compactification (mathematics) #Cosmic microwave background #Cosmic string #Cosmology and Gravitation Theories #Dilaton #Extra dimensions #Gauge theory #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum electrodynamics #Quantum mechanics #Randall–Sundrum model #Scalar field #String (physics) #String theory #Theoretical physics #hep-th
paper · pdf · doi:10.1103/physrevd.81.024013
published as Phys.Rev.D81:024013,2010 · 9 pages, 5 fgures
arxiv created 2009/04/12 · openalex publication_date 2010/01/14 · arxiv updated 2010/04/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider a scalar field interacting with a cosmic string configuration. The origin of the scalar field is given by a compactification mechanism in the context of a five-dimensional Brans-Dicke theory. We analyze the behavior of a charged cosmic string given by the Maxwell-Chern-Simons term on the 3-brane. The Cosmic Microwave Background Radiation constraint is used to analyze the possibility of optical activity effect in connection with the Brans-Dicke parameter \ensuremathω. We show that the dilatons produced by a cosmic string can decay into gauge bosons with masses given by the compactification modes. The Brans-Dicke parameter \ensuremathω imposes stringent constraints on the mass of the dilaton and help us to understand the energy scales. In this scenario the lifetime of the dilaton which decays into light gauge bosons as well as the dependence of this phenomenon with the Brans-Dicke parameter are estimated.