Casimir Densities for a Massive Fermionic Quantum Field in a Global Monopole Background with Spherical Boundary

Details Casimir Densities for a Massive Fermionic Quantum Field in a Global Monopole Background with Spherical Boundary Casimir Densities for a Massive Fermionic Quantum Field in a Global Monopole Background with Spherical Boundary

2005-06-28

arxiv.org/abs/hep-th/0506239v1

Int.J.Mod.Phys.A20:2380-2387,2005

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, 4 figures, 6th Alexander Friedmann International Seminar on Gravitation and Cosmology

Scientific paper

10.1142/S0217751X05024651

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.

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