Collected Papers

Exploring advanced concepts in quantum field theory, this collection delves into critical point dominance, mass differentiability, and the behavior of interactions near critical points. It discusses particle structure, including three-particle interactions and the role of entropy in vertex functions. The work also addresses coupling constants, confinement phenomena, and instantons within lattice gauge theories. With a focus on reflection positivity, the papers provide a comprehensive examination of foundational models such as the cp~ and Yukawa models, emphasizing their mathematical rigor and implications in theoretical physics.