2005/04/30 by A. A. Saharian, A. A. SAHARIAN, E. R. Bezerra de Mello +1 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Boundary (topology) #Boundary value problem #Casimir effect #Cosmology and Gravitation Theories #Fermionic field #Field (mathematics) #Gravitational field #Limit (mathematics) #Magnetic monopole #Quantum Electrodynamics and Casimir Effect #Vacuum expectation value #gr-qc #hep-th
paper · pdf · doi:10.1142/s0217751x05024651
published as Int.J.Mod.Phys.A20:2380-2387,2005 · 8 pages, 4 figures, 6th Alexander Friedmann International Seminar on Gravitation and Cosmology
openalex publication_date 2005/04/30 · arxiv created 2005/06/28 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate the vacuum expectation value of the energy-momentum tensor associated with a massive fermionic field obeying the MIT bag boundary condition on a spherical shell in the global monopole spacetime. The asymptotic behavior of the vacuum densities is investigated near the sphere center and surface, and at large distances from the sphere. In the limit of strong gravitational field corresponding to small values of the parameter describing the solid angle deficit in global monopole geometry, the sphere-induced expectation values are exponentially suppressed.