An Exchange Identity for Non-Linear Fields
Arthur Jaffe, Christian D. Jäkel open access link Commun.Math.Phys. 264 (2006) 283-289Thermal Quantum Fields without Cut-offs in 1+1 Space-time Dimensions
Christian Gerard, Christian D. Jäkel open access link Rev.Math.Phys. 17 (2005) 113-174Thermal Quantum Fields with Spatially Cut-off Interactions in 1+1 Space-time Dimensions
Christian Gerard, Christian D. Jäkel open access linkJ. Funct. Anal. 220, 157-213 (2005)