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Collisionless Reconnection: Magnetic Field Line Interaction : Volume 30, Issue 10 (09/10/2012)

By Treumann, R. A.

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Book Id: WPLBN0004002087
Format Type: PDF Article :
File Size: Pages 14
Reproduction Date: 2015

Title: Collisionless Reconnection: Magnetic Field Line Interaction : Volume 30, Issue 10 (09/10/2012)  
Author: Treumann, R. A.
Volume: Vol. 30, Issue 10
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Gonzalez, W. D., Baumjohann, W., & Treumann, R. A. (2012). Collisionless Reconnection: Magnetic Field Line Interaction : Volume 30, Issue 10 (09/10/2012). Retrieved from http://www.nationalpubliclibrary.info/


Description
Description: Department of Geophysics and Environmental Sciences, Munich University, Munich, Germany. Magnetic field lines are quantum objects carrying one quantum Φ0 = 2Πh/e of magnetic flux and have finite radius Λm. Here we argue that they possess a very specific dynamical interaction. Parallel field lines reject each other. When confined to a certain area they form two-dimensional lattices of hexagonal structure. We estimate the filling factor of such an area. Anti-parallel field lines, on the other hand, attract each other. We identify the physical mechanism as being due to the action of the gauge potential field, which we determine quantum mechanically for two parallel and two anti-parallel field lines. The distortion of the quantum electrodynamic vacuum causes a cloud of virtual pairs. We calculate the virtual pair production rate from quantum electrodynamics and estimate the virtual pair cloud density, pair current and Lorentz force density acting on the field lines via the pair cloud. These properties of field line dynamics become important in collisionless reconnection, consistently explaining why and how reconnection can spontaneously set on in the field-free centre of a current sheet below the electron-inertial scale.

Summary
Collisionless reconnection: magnetic field line interaction

Excerpt
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