Bessho N, Bhattacharjee A
Space Science Center and Center for Magnetic Self-Organization, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, New Hampshire 03824, USA.
Phys Rev Lett. 2005 Dec 9;95(24):245001. doi: 10.1103/PhysRevLett.95.245001. Epub 2005 Dec 5.
Electromagnetic particle-in-cell simulations of fast collisionless reconnection in a two-dimensional electron-positron plasma (without an equilibrium guide field) are presented. A generalized Ohm's law in which the Hall current cancels out exactly is given. It is suggested that the key to fast reconnection in this plasma is the localization caused by the off-diagonal components of the pressure tensors, which produce an effect analogous to a spatially localized resistivity.
本文给出了二维电子 - 正电子等离子体（无平衡引导场）中快速无碰撞重联的电磁粒子模拟。给出了一个广义欧姆定律，其中霍尔电流恰好抵消。研究表明，这种等离子体中快速重联的关键在于压力张量非对角分量引起的局域化，这产生了一种类似于空间局域电阻率的效应。
