Difference between the vacuum Casimir energies for grounded and isolated conductors

We study the vacuum (i.e., zero-temperature) Casimir energy for a system of neutral conductors which are isolated, as opposed to grounded. The former is meant to describe a situation where the total charge on each conductor, as well as all of its fluctuations, vanishes, while the latter describes a...

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Autores principales: Lombardo, Fernando César, Mazzitelli, Francisco Diego
Publicado: 2016
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24700010_v94_n8_p_Fosco
http://hdl.handle.net/20.500.12110/paper_24700010_v94_n8_p_Fosco
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_24700010_v94_n8_p_Fosco
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spelling paper:paper_24700010_v94_n8_p_Fosco2023-06-08T16:36:27Z Difference between the vacuum Casimir energies for grounded and isolated conductors Lombardo, Fernando César Mazzitelli, Francisco Diego We study the vacuum (i.e., zero-temperature) Casimir energy for a system of neutral conductors which are isolated, as opposed to grounded. The former is meant to describe a situation where the total charge on each conductor, as well as all of its fluctuations, vanishes, while the latter describes a situation where the conductors are connected to a charge reservoir. We compute the difference between the vacuum energies for a given system of conductors, but subjected to the two different conditions stated above. The results can be written in terms of a generalized, frequency-dependent capacitance matrix of the system. Using a multipolar expansion, we show that the grounded Casimir energy includes a monopole-monopole interaction term that is absent in the isolated case in the large distance limit. © 2016 American Physical Society. Fil:Lombardo, F.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mazzitelli, F.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24700010_v94_n8_p_Fosco http://hdl.handle.net/20.500.12110/paper_24700010_v94_n8_p_Fosco
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We study the vacuum (i.e., zero-temperature) Casimir energy for a system of neutral conductors which are isolated, as opposed to grounded. The former is meant to describe a situation where the total charge on each conductor, as well as all of its fluctuations, vanishes, while the latter describes a situation where the conductors are connected to a charge reservoir. We compute the difference between the vacuum energies for a given system of conductors, but subjected to the two different conditions stated above. The results can be written in terms of a generalized, frequency-dependent capacitance matrix of the system. Using a multipolar expansion, we show that the grounded Casimir energy includes a monopole-monopole interaction term that is absent in the isolated case in the large distance limit. © 2016 American Physical Society.
author Lombardo, Fernando César
Mazzitelli, Francisco Diego
spellingShingle Lombardo, Fernando César
Mazzitelli, Francisco Diego
Difference between the vacuum Casimir energies for grounded and isolated conductors
author_facet Lombardo, Fernando César
Mazzitelli, Francisco Diego
author_sort Lombardo, Fernando César
title Difference between the vacuum Casimir energies for grounded and isolated conductors
title_short Difference between the vacuum Casimir energies for grounded and isolated conductors
title_full Difference between the vacuum Casimir energies for grounded and isolated conductors
title_fullStr Difference between the vacuum Casimir energies for grounded and isolated conductors
title_full_unstemmed Difference between the vacuum Casimir energies for grounded and isolated conductors
title_sort difference between the vacuum casimir energies for grounded and isolated conductors
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24700010_v94_n8_p_Fosco
http://hdl.handle.net/20.500.12110/paper_24700010_v94_n8_p_Fosco
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