Dynamical Casimir effect for a massless scalar field between two concentric spherical shells with mixed boundary conditions

Journal Article · Wed Jul 15 04:00:00 EDT 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.012503· OSTI ID:21313245

Pascoal, F; Moussa, M H. Y. ^[1]; Celeri, L C ^[2]; Mizrahi, S S ^[3]; Farina, C ^[4]

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1. Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 369, 13566-590 Sao Carlos, SP (Brazil)
2. Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, R. Santa Adelia 166, Santo Andre 09210-170, SP (Brazil)
3. Departamento de Fisica, Universidade Federal de Sao Carlos, Via Washington Luis, km 235, Sao Carlos 13565-905, SP (Brazil)
4. Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21945-970 Rio de Janeiro, RJ (Brazil)

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.

• OSTI ID: 21313245
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 80; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOUNDARY CONDITIONS
CASIMIR EFFECT
DIRICHLET PROBLEM
HARMONICS
PARTICLE PRODUCTION
QUANTUM ELECTRODYNAMICS
SCALAR FIELDS
SPHERICAL CONFIGURATION