2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/229408The dynamics of two spins coupled to bosonic baths at different temperatures is studied. The analytical solution for the reduced density matrix of the system in the Markovian and Post-Markovian case with exponential memory kernel is found. The dynamics and temperature dependence of spin-spin entanglement is analyzed.Proceedings of the International Conference on Mathematical Physics and Its Applications (Russian Federation, Samara, September 8-13, 2008); accepted in the Vestnik of Samara State University, Special Issue, 2009; ref. [14] added and typos correctedQuantum Physicstext