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math.AP2026
The Schrödinger-Klein-Gordon System Revisited
Christophe Cheverry, Zied Ammari
We introduce a microlocal formulation of the Schr{ö}dinger-Klein-Gordon system describing the interaction between a non-relativistic quantum particle and a Klein-Gordon field throu…
math-ph2026
Higher-Order Approximation of Coherent State Dynamics in Self-Interacting Quantum Field Theories
Zied Ammari, Julien Malartre, Maher Zerzeri
We study the propagation of coherent states in self-interacting bosonic quantum field theories in the semi-classical (mean-field) regime. Relying on Hepp's method and a detailed an…