2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/198059New applications of Feynman disentangling method in quantum mechanics are studied and the time-dependent singular oscillator problem is solved in this approach. The important role of representation group theory is discussed in this context.3 pages; RevTeX 4; submited to Phys. Lett. AQuantum PhysicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext