arXiv subjects
Publications and source records attributed to Kalle Kytölä.
We study SLE reversibility and duality using the Virasoro structure of the space of local martingales. For both problems we formulate a setup where the questions boil down to comparing two processes at a stopping time. We state algebraic results showing that local martingales for the processes have enough in common. When one has in addition integrability, the method gives reversibility and duality for any polynomial expected value.
SLE(kappa; rho), a generalization of chordal Schramm-Löwner evolution (SLE), is discussed from the point of view of statistical mechanics and conformal field theory (CFT). Certain ratios of CFT correlation functions are shown to be martingales. The interpretation is that SLE(kappa; rho) describes an interface in a statistical mechanics model whose boundary conditions are created in the Coulomb gas formalism by vertex operators with charges alpha = rho/(2 sqrt(kappa)). The total charge vanishes and therefore the partition function has a simple product form. We also suggest a generalization of SLE(kappa; rho).