A small data theorem for collisionless plasma that includes high velocity particles Jack Schaeffer 35L6035Q9982C2182D10Vlasov-Poisson equationplasmasglobal existenceinitial value problem Indiana University Mathematics Journal 2004 text pdf 10.1512/iumj.2004.53.2515 10.1512/iumj.2004.53.2515 en Indiana Univ. Math. J. 53 (2004) 1 - 34 state-of-the-art mathematics http://iumj.org/access/