2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/159060In this report, we examine the relaxation phenomena of a spin qubit coupled to a spin chain with a $1/r^2$ interaction.Mesoscale and Nanoscale PhysicsMaterials ScienceDecoherence of a Spin Qubit Coupled with Spin Chaintext