Quantum field theory with a fundamental length: A general mathematical framework

M. A. Soloviev<br/> We review and develop a mathematical framework for nonlocal quantum field theory (QFT) with a fundamental length. As an instructive example, we re-examine the normal ordered Gaussian function of a free field and find the primitive analyticity domain of its n-point vacuum expectation values. This dom … [J. Math. Phys. 50, 123519 (2009)] published Fri Dec 18, 2009.