Hanno Sahlmann Friedrich-Alexander Universität Erlangen-Nürnberg http://www.gravity.physik.fau.de/members/people/sahlmann.shtml Papers Microlocal spectrum condition and Hadamard form for vector-valued quantum fields in curved spacetime Hanno Sahlmann, Rainer Verch August 22, 2000 open access link Rev.Math.Phys. 13 (2001) 1203-1246 Passivity and microlocal spectrum condition Hanno Sahlmann, Rainer Verch February 08, 2000 open access link Commun.Math.Phys. 214 (2000) 705-731