Kavli Affiliate: Robert Wald | Summary:Operator product expansions (OPEs) in quantum field theory (QFT) provide an asymptotic relation between products of local fields defined at points $x_1, dots, x_n$ and local fields at point $y$ in the limit $x_1, dots, x_n to y$. They thereby capture in a precise way the singular behavior of products […]
Continue.. The Operator Product Expansion in Quantum Field Theory