2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/16286Using a Hamiltonian formulation of Composite Fermions that I recently developed with R. Shankar, I compute the dependence of the spin polarization on the temperature for the translationally invariant fractional quantum Hall states at $ν=1/3$ and $ν=2/5$. I compare my results to experiments at $ν=1/3$ and find reasonably good agreement.5 eps figuresMesoscale and Nanoscale Physicstext