Observability of an induced electric dipole moment of the neutron from nonlinear QED

It has been shown recently that a neutron placed in an external quasistatic electric field develops an induced electric dipole moment p<sub>IND</sub> due to quantum fluctuations in the QED vacuum. A feasible experiment which could detect such an effect is proposed and described here. It...

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Detalles Bibliográficos
Autores principales: Zimmer, O., Dominguez, Cesareo A., Falomir, Horacio Alberto, Loewe, Marcelo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Exactas
Física
neutron
external quasistatic electric field
dipole moment
nonlinear QED
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126240
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-126240
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
neutron
external quasistatic electric field
dipole moment
nonlinear QED
spellingShingle Ciencias Exactas
Física
neutron
external quasistatic electric field
dipole moment
nonlinear QED
Zimmer, O.
Dominguez, Cesareo A.
Falomir, Horacio Alberto
Loewe, Marcelo
Observability of an induced electric dipole moment of the neutron from nonlinear QED
topic_facet Ciencias Exactas
Física
neutron
external quasistatic electric field
dipole moment
nonlinear QED
description It has been shown recently that a neutron placed in an external quasistatic electric field develops an induced electric dipole moment p<sub>IND</sub> due to quantum fluctuations in the QED vacuum. A feasible experiment which could detect such an effect is proposed and described here. It is shown that the peculiar angular dependence of p<sub>IND</sub> on the orientation of the neutron spin leads to a characteristic asymmetry in polarized neutron scattering by heavy nuclei. This asymmetry can be of the order of 10⁻³ for neutrons with epithermal energies. For thermalized neutrons from a hot moderator, one still expects experimentally accessible values of the order of 10⁻⁴. The contribution of the induced effect to the neutron scattering length is expected to be only 1 order of magnitude smaller than that due to the neutron polarizability from its quark substructure. The experimental observation of this scattering asymmetry would be the first ever signal of nonlinearity in electrodynamics due to quantum fluctuations in the QED vacuum.
format Articulo
Articulo
author Zimmer, O.
Dominguez, Cesareo A.
Falomir, Horacio Alberto
Loewe, Marcelo
author_facet Zimmer, O.
Dominguez, Cesareo A.
Falomir, Horacio Alberto
Loewe, Marcelo
author_sort Zimmer, O.
title Observability of an induced electric dipole moment of the neutron from nonlinear QED
title_short Observability of an induced electric dipole moment of the neutron from nonlinear QED
title_full Observability of an induced electric dipole moment of the neutron from nonlinear QED
title_fullStr Observability of an induced electric dipole moment of the neutron from nonlinear QED
title_full_unstemmed Observability of an induced electric dipole moment of the neutron from nonlinear QED
title_sort observability of an induced electric dipole moment of the neutron from nonlinear qed
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/126240
work_keys_str_mv AT zimmero observabilityofaninducedelectricdipolemomentoftheneutronfromnonlinearqed
AT dominguezcesareoa observabilityofaninducedelectricdipolemomentoftheneutronfromnonlinearqed
AT falomirhoracioalberto observabilityofaninducedelectricdipolemomentoftheneutronfromnonlinearqed
AT loewemarcelo observabilityofaninducedelectricdipolemomentoftheneutronfromnonlinearqed
bdutipo_str Repositorios
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