Periodic charge oscillations in the Proca theory

We consider the Proca theory of the real massive vector field. There is a locally conserved 4-current operator in such a theory, which one may use to define the charge operator. Accordingly, there are charged states in which the expectation value of the charge operator is non-zero. We take a close l...

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Main Author: Bogdan Damski
Format: Article
Language:English
Published: Elsevier 2023-09-01
Series:Nuclear Physics B
Online Access:http://www.sciencedirect.com/science/article/pii/S0550321323002298
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author Bogdan Damski
author_facet Bogdan Damski
author_sort Bogdan Damski
collection DOAJ
description We consider the Proca theory of the real massive vector field. There is a locally conserved 4-current operator in such a theory, which one may use to define the charge operator. Accordingly, there are charged states in which the expectation value of the charge operator is non-zero. We take a close look at the charge operator and study the dynamics of the certain class of charged states. For this purpose, we discuss the mean electric field and 4-current in such states. The mean electric field has the periodically oscillating Coulomb component, whose presence explains the periodic charge oscillations. A complementary insight at such a phenomenon is provided by the mean 4-current, whose discussion leads to the identification of a certain paradox. Last but not least, we show that there is a shock wave propagating in the studied system, which affects analyticity of the mean electric field and 4-current.
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spelling doaj.art-b2d25cba02aa4836a4dc3aed1abe077f2023-08-26T04:42:41ZengElsevierNuclear Physics B0550-32132023-09-01994116300Periodic charge oscillations in the Proca theoryBogdan Damski0Jagiellonian University, Faculty of Physics, Astronomy and Applied Computer Science, Łojasiewicza 11, 30-348 Kraków, PolandWe consider the Proca theory of the real massive vector field. There is a locally conserved 4-current operator in such a theory, which one may use to define the charge operator. Accordingly, there are charged states in which the expectation value of the charge operator is non-zero. We take a close look at the charge operator and study the dynamics of the certain class of charged states. For this purpose, we discuss the mean electric field and 4-current in such states. The mean electric field has the periodically oscillating Coulomb component, whose presence explains the periodic charge oscillations. A complementary insight at such a phenomenon is provided by the mean 4-current, whose discussion leads to the identification of a certain paradox. Last but not least, we show that there is a shock wave propagating in the studied system, which affects analyticity of the mean electric field and 4-current.http://www.sciencedirect.com/science/article/pii/S0550321323002298
spellingShingle Bogdan Damski
Periodic charge oscillations in the Proca theory
Nuclear Physics B
title Periodic charge oscillations in the Proca theory
title_full Periodic charge oscillations in the Proca theory
title_fullStr Periodic charge oscillations in the Proca theory
title_full_unstemmed Periodic charge oscillations in the Proca theory
title_short Periodic charge oscillations in the Proca theory
title_sort periodic charge oscillations in the proca theory
url http://www.sciencedirect.com/science/article/pii/S0550321323002298
work_keys_str_mv AT bogdandamski periodicchargeoscillationsintheprocatheory