2002/08/20 by Yoonbai Kim, O-Kab Kwon, Jongsu Sohn · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Quantum Electrodynamics and Casimir Effect #astro-ph #gr-qc #hep-th
paper · pdf · doi:10.1016/s0370-2693(02)02894-0
published as Phys.Lett. B549 (2002) 221-228 · LaTeX, 13 pages, 2 figures
arxiv created 2002/08/20 · openalex publication_date 2002/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Vacuum structure and global cosmic strings are analyzed in the effective theory of self-interacting O(2) scalar fields on (3+1)-manifolds with conical singularities. In the context of one-loop effective action computed by heat-kernel methods with ζ-function regularization, we find an inhomogeneous vacuum of minimum energy and suggest some reason why low-energy global strings are likely to be generated at the conical singularities.