In my post graduate course, several years now, our professor in field theory have mentioned that in field theory the fields of mass-energy seem to be space and time themselves, like electric and magnetic fields in ElectroMagnetism. Specificaly he said that "the problem is that in ElectroMagnetism the fields are like the actors on the scene, but in gravity the fields seemed to be the scene itself! So its difficult to handle them...". This means that as an electric charge creates electric field (and if moved magnetic field), at the same way mass can "create" space and time. I am aware of the bending of space through mass, but not the "creation" of it. I am having trouble finding literature that explains that and maths to proove that. Can anybody help?