title: Collisionless reconnection in an electron-positron plasma.
abstract: 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.
authors.affiliation: 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.
authors.forename: N
authors.initials: N
authors.lastname: Bessho
authors.forename: A
authors.initials: A
authors.lastname: Bhattacharjee