Abstract:
We study the contribution of the thermal zero modes to the Casimir free energy in the case of a fluctuating electromagnetic (EM) field in the presence of real materials described by frequency-dependent, local and isotropic permittivity (ε) and permeability (μ) functions. Those zero modes, present at any finite temperature, become dominant at high temperatures since the theory is dimensionally reduced. Our work, within the context of the derivative expansion (DE) approach, focuses on the emergence of nonanalyticities in that dimensionally reduced theory. We conclude that the DE is well defined whenever the function Ω(ω), defined by [Ω(ω)]2≡ω2ε(ω), vanishes in the zero-frequency limit for at least one of the two material media involved. © 2015 American Physical Society.
Registro:
Documento: |
Artículo
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Título: | Derivative expansion for the electromagnetic Casimir free energy at high temperatures |
Autor: | Fosco, C.D.; Lombardo, F.C.; Mazzitelli, F.D. |
Filiación: | Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energía Atómica, Bariloche, R8402AGP, Argentina Departamento de Física Juan José Giambiagi, FCEyN UBA, IFIBA CONICET-UBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellón I, Buenos Aires, 1428, Argentina
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Año: | 2015
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Volumen: | 92
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Número: | 12
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DOI: |
http://dx.doi.org/10.1103/PhysRevD.92.125007 |
Título revista: | Physical Review D - Particles, Fields, Gravitation and Cosmology
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Título revista abreviado: | Phys Rev D Part Fields Gravit Cosmol
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ISSN: | 15507998
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CODEN: | PRVDA
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v92_n12_p_Fosco |
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Citas:
---------- APA ----------
Fosco, C.D., Lombardo, F.C. & Mazzitelli, F.D.
(2015)
. Derivative expansion for the electromagnetic Casimir free energy at high temperatures. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(12).
http://dx.doi.org/10.1103/PhysRevD.92.125007---------- CHICAGO ----------
Fosco, C.D., Lombardo, F.C., Mazzitelli, F.D.
"Derivative expansion for the electromagnetic Casimir free energy at high temperatures"
. Physical Review D - Particles, Fields, Gravitation and Cosmology 92, no. 12
(2015).
http://dx.doi.org/10.1103/PhysRevD.92.125007---------- MLA ----------
Fosco, C.D., Lombardo, F.C., Mazzitelli, F.D.
"Derivative expansion for the electromagnetic Casimir free energy at high temperatures"
. Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 92, no. 12, 2015.
http://dx.doi.org/10.1103/PhysRevD.92.125007---------- VANCOUVER ----------
Fosco, C.D., Lombardo, F.C., Mazzitelli, F.D. Derivative expansion for the electromagnetic Casimir free energy at high temperatures. Phys Rev D Part Fields Gravit Cosmol. 2015;92(12).
http://dx.doi.org/10.1103/PhysRevD.92.125007