Phonon-Induced Decoherence and Non-Markovian Dynamics in Strongly Coupled Quantum Dot–Microcavity Systems: A Non-Perturbative Variational Polaron Investigation. IJESR. 2026;16(1):656-665. Accessed April 22, 2026. https://ijesr.org/index.php/ijesr/article/view/1622