Quantum Absorption Refrigerator 2D: Energy-Level Map

This is the 2D top-down companion to the 3D quantum absorption refrigerator. A three-level quantum system wired to three independent heat baths can pump heat out of a cold reservoir using nothing but a temperature difference — no external work, no moving parts. This view lays the same steady-state Pauli master-equation model out as three flat horizontal energy shelves instead of stacked 3D rings, with a swarm of 220 particles making real stochastic quantum jumps between them that you can pan and zoom past freely. Live readouts track the cooling power pulled from the cold bath, the coefficient of performance, and the entropy production rate, which the second law guarantees stays non-negative no matter how you set the sliders.