atomic atomsandmoleculesinstrongfields classicalandquantumgravitation condensedmatterphysics engineering fourthdimension general geometry hadrons heavyions lasermatterinteraction mathematicalmethodsinphysics mathematicalphysics mathematics molecular nuclearphysics opticalandplasmaphysics physics qc770-798 quantumfieldtheories quantumtheory relativitytheory spaceandtime stringtheory