Abstract
Causality and local commutativity of string fields in the pp-wave lightcone string field theory is Contrary to the flat space case result, we found that the pp-wave interaction does not affect the local commutativity condition. Our results show that the pp-wave lightcone string field theory is discontinous at the flat space limit. © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.