Relaxation of the chiral imbalance and the generation of magnetic fields in magnetars

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• 作者：M. S. Dvornikov
• 刊名：Journal of Experimental and Theoretical Physics
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：123
• 期：6
• 页码：967-978
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Particle and Nuclear Physics; Classical and Quantum Gravitation, Relativity Theory; Elementary Particles, Quantum Field Theory; Solid State Physics;
• 出版者：Pleiades Publishing
• ISSN：1090-6509
• 卷排序：123

文摘

The model for the generation of magnetic fields in a neutron star, based on the magnetic field instability caused by the electroweak interaction between electrons and nucleons, is developed. Using the methods of the quantum field theory, the helicity flip rate of electrons in their scattering off protons in dense matter of a neutron star is calculated. The influence of the electroweak interaction between electrons and background nucleons on the process of the helicity flip is studied. The kinetic equation for the evolution of the chiral imbalance is derived. The obtained results are applied for the description of the magnetic fields evolution in magnetars.