{"knowledge_schema": {"broad_category": "Physics \u2192 Quantum Field Theory \u2192 Symmetry and Particle Physics", "refinement": "This problem examines the relationship between effective particles and the concept of spontaneously-broken symmetries in quantum field theories.", "specific_scope": "The focus is on identifying which of the listed effective particles does not arise from a spontaneously-broken symmetry, considering their physical properties and theoretical backgrounds.", "goal": "Determine which particle among the candidates is not associated with spontaneously-broken symmetry."}, "summary": "In this problem, we are tasked with identifying which effective particle is not linked to spontaneously-broken symmetry. The candidates include Skyrmion, Phonon, Magnon, and Pion. Understanding the nature of these particles and their origins in the context of symmetry breaking is crucial. The answer is Skyrmion, as it does not arise from a spontaneously-broken symmetry, unlike the other particles listed."}