NEW EXPRESSIONS FOR STRING LOOP AMPLITUDES LEADING TO AN ULTRASIMPLE CONCEPTION OF STRING DYNAMICS

New expressions are derived for string loop amplitudes as overlap integrals of string wave functionals. They are shown to take the form of exchange terms coming from the Bose-Einstein symmetrization between string segments. One is thus led to the ultrasimple conception that string theory is basically free, and that "string interactions" are merely due to the fact that strings are composite objects with Bose-Einstein segments as constituents.