# Induced fermionic current by a magnetic tube in the cosmic string spacetime

@article{Sousa2016InducedFC, title={Induced fermionic current by a magnetic tube in the cosmic string spacetime}, author={M. S. Maior de Sousa and R F Ribeiro and Eugenio R. Bezerra de Mello}, journal={Physical Review D}, year={2016}, volume={93}, pages={043545} }

In this paper, we consider a charged massive fermionic quantum field in the space-time of an idealized cosmic string, in the presence of a magnetic field confined in a cylindrical tube of finite radius. Three distinct configurations for the magnetic field is taken into account: (i) a cylindrical shell of radius $a$, (ii) a magnetic field proportional to $1/r$ and (iii) a constant magnetic field. In these three cases, the axis of the infinitely long tube of radius $a$ coincides with the cosmic…

## 12 Citations

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In this manuscript, we study the relativistic quantum mechanics of an electron in external fields in the spinning cosmic string spacetime. We obtain the Dirac equation and write the first- and…

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We study the vacuum polarisation eﬀects of the Dirac fermionic ﬁeld induced by a pointlike global monopole located in the cosmological de Sitter spacetime. First we derive the four orthonormal Dirac…

### Scattering and bound states for the Hulthén potential in a cosmic string background

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In this work we study the Dirac equation with vector and scalar potentials in the spacetime generated by a cosmic string. Using an approximation for the centrifugal term, a solution for the radial…

### Noncommutative Dirac and Klein–Gordon oscillators in the background of cosmic string: Spectrum and dynamics

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