Artículos de revistas
Dynamical Casimir effect for a massless scalar field between two concentric spherical shells with mixed boundary conditions
Fecha
2009Registro en:
PHYSICAL REVIEW A, v.80, n.1, 2009
1050-2947
10.1103/PhysRevA.80.012503
Autor
PASCOAL, F.
CELERI, L. C.
MIZRAHI, S. S.
MOUSSA, Miled Hassan Youssef
FARINA, C.
Institución
Resumen
In this work we analyze the dynamical Casimir effect for a massless scalar field confined between two concentric spherical shells considering mixed boundary conditions. We thus generalize a previous result in literature [Phys. Rev. A 78, 032521 (2008)], where the same problem is approached for the field constrained to the Dirichlet-Dirichlet boundary conditions. A general expression for the average number of particle creation is deduced considering an arbitrary law of radial motion of the spherical shells. This expression is then applied to harmonic oscillations of the shells, and the number of particle production is analyzed and compared with the results previously obtained under Dirichlet-Dirichlet boundary conditions.