2006/08/28 by E. R. Bezerra de Mello, A. A. Saharian
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmic string #Cosmology and Gravitation Theories #Magnetic monopole #Mathematics #Physics #Quantum Electrodynamics and Casimir Effect #Quantum electrodynamics #Quantum mechanics #String (physics) #Theoretical physics #Topological defect #Topology (electrical circuits) #gr-qc #hep-th #quant-ph
paper · pdf · doi:10.1016/j.physletb.2006.09.014
published as Phys.Lett.B642:129-136,2006 · 11 pages, 2 figures
arxiv created 2006/08/28 · openalex publication_date 2006/09/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this paper we analyze one-loop quantum effects of a scalar field induced by a composite topological defect consisting a cosmic string on a p-dimensional brane and a (m+1)-dimensional global monopole in the transverse extra dimensions. The corresponding Green function is presented as a sum of two terms. The first one corresponds to the bulk where the cosmic string is absent and the second one is induced by the presence of the string. For the points away from the cores of the topological defects the latter is finite in the coincidence limit and is used for the evaluation of the vacuum expectation values of the field square and energy-momentum tensor.