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2014 | OriginalPaper | Chapter

Hidden Momentum in the Framework of Gravitoelectromagnetism

Author : L. Filipe O. Costa

Published in: Progress in Mathematical Relativity, Gravitation and Cosmology

Publisher: Springer Berlin Heidelberg

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Abstract

A still not well understood feature of extended bodies in general relativity is the fact that their momentum is not, in general, parallel to the center of mass 4-velocity—the body is said to have “hidden momentum”. It can be split in two main types, a physical one that is gauge invariant, and the pure gauge hidden momentum that arises from the spin supplementary condition. In this paper I focus on the latter, using the formalism of gravitoelectromagnetism, which yields an easy way of understanding it, and under which conditions it arises.

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Footnotes
1
This gravitomagnetic field differs by a factor of 2 from the most usual one in the context of experimental gravitomagnetism, \(H_{(\varOmega =\omega )}^{\alpha } = {2\omega }^{\alpha }\), obtained by demanding the triads e i to co-rotate with the congruence (\({\varOmega }^{\alpha } {=\omega }^{\alpha }\)). The frame of “the distant stars”, relative to which gyroscope and orbital precessions are measured, is set up in this way, see [2] for details.
 
2
This is a generalization of the condition introduced by Corinaldesi–Papapetrou (CP) for the Schwarzschild spacetime (see in [4]).
 
Literature
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go back to reference Costa, L. F., Natário J., [arXiv:1207.0465] (2012) Costa, L. F., Natário J., [arXiv:1207.0465] (2012)
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go back to reference Costa, L. F., Natário, J., Zilhão, M., AIP Conf. Proc. 1458 (2011) 367–370 [arXiv:1206.7093] Costa, L. F., Natário, J., Zilhão, M., AIP Conf. Proc. 1458 (2011) 367–370 [arXiv:1206.7093]
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go back to reference Costa, L. F., Herdeiro C., Natário J., Zilhão, M., Phys. Rev. D 85, 024001 (2012)CrossRef Costa, L. F., Herdeiro C., Natário J., Zilhão, M., Phys. Rev. D 85, 024001 (2012)CrossRef
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go back to reference Costa, L. F., Natário J., Zilhão, M., [arXiv:1207.0470] (2012) Costa, L. F., Natário J., Zilhão, M., [arXiv:1207.0470] (2012)
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go back to reference Jantzen R. T., Carini, P., Bini, D., Ann. Phys. 215(1) (1992) [arXiv:gr-qc/0106043] Jantzen R. T., Carini, P., Bini, D., Ann. Phys. 215(1) (1992) [arXiv:gr-qc/0106043]
Metadata
Title
Hidden Momentum in the Framework of Gravitoelectromagnetism
Author
L. Filipe O. Costa
Copyright Year
2014
Publisher
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-642-40157-2_26

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