Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2003-07-26
J.Phys.A37:3543,2004
Physics
High Energy Physics
High Energy Physics - Theory
20 pages, 4 figures
Scientific paper
10.1088/0305-4470/37/10/017
We investigate the vacuum expectation values of the energy-momentum tensor and the fermionic condensate associated with a massive spinor field obeying the MIT bag boundary condition on a spherical shell in the global monopole spacetime. In order to do that it was used the generalized Abel-Plana summation formula. As we shall see, this procedure allows to extract from the vacuum expectation values the contribution coming from to the unbounded spacetime and explicitly to present the boundary induced parts. As to the boundary induced contribution, two distinct situations are examined: the vacuum average effect inside and outside the spherical shell. 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. As a special case we discuss the fermionic vacuum densities for the spherical shell on background of the Minkowski spacetime. Previous approaches to this problem within the framework of the QCD bag models have been global and our calculation is a local extension of these contributions.
de Mello Eugenio R. Bezerra
Saharian Aram A.
No associations
LandOfFree
Spinor Casimir densities for a spherical shell in the global monopole spacetime does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spinor Casimir densities for a spherical shell in the global monopole spacetime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spinor Casimir densities for a spherical shell in the global monopole spacetime will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-50181