Journal
PHYSICS LETTERS A
Volume 291, Issue 6, Pages 407-412Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0375-9601(01)00751-4
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Fast reconnection due to turbulent dissipation has long been hypothesized. This classic idea is critically examined in 3D reduced magnetohydrodynamic turbulence, by taking into account the backreaction of small-scale magnetic fields. We find that the backreaction leads to such a dramatic reduction in a global reconnection rate as to recover the original Sweet-Parker scaling. In 2D limit, the global reconnection rate is shown to be enhanced over the Sweet-Parker result by a factor of magnetic Mach number. These results are consequences of mean square magnetic potential balance. (C) 2001 Elsevier Science B.V. All rights reserved.
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