Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Impossibility of the strong magnetic fields generation in an electron-positron plasma

Full text
Dvornikov, Maxim [1]
Total Authors: 1
[1] Univ Sao Paulo, Inst Phys, BR-05315970 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Physical Review D; v. 90, n. 4 AUG 22 2014.
Web of Science Citations: 10

We examine the issue of whether a magnetic field can be amplified in a background matter consisting of electrons and positrons self-interacting within the Fermi model. For this purpose, we compute the antisymmetric contribution to the photon polarization tensor in this matter having nonzero temperature and chemical potential. It is shown that this contribution is vanishing in the static limit. Then we study a particular case of a degenerate relativistic electron gas present in a magnetar. We demonstrate that a seed magnetic field is attenuated in this case. Thus, contrary to the recent claim, we show that there is no magnetic field instability in such a system, which can lead to the magnetic field growth. Therefore, the recently proposed mechanism cannot be used for the explanation of strong magnetic fields of magnetars. (AU)

FAPESP's process: 11/50309-2 - Collective neutrino oscillationsin various external fields.
Grantee:Maxim Dvornikov
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/13884-4 - Nonlinear interactions in dense plasmas
Grantee:Maxim Dvornikov
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor