2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157641We present the exact analysis of a chiral Brownian motor and heat pump. Optimization of the construction predicts, for a nanoscale device, frequencies of the order of kHz and cooling rates of the order of femtojoule per second.Submitted to Phys. Rev. LettStatistical Mechanicstext