A Causal Algebra for Liouville Exponentials
arXiv:hep-th/0512018 · doi:10.1088/0264-9381/23/20/020
Abstract
A causal Poisson bracket algebra for Liouville exponentials on a cylinder is derived using an exchange algebra for free fields describing the in and out asymptotics. The causal algebra involves an even number of space-time points with a minimum of four. A quantum realisation of the algebra is obtained which preserves causality and the local form of non-equal time brackets.
10 pages