Analysis on the Real Mechanism of Slow-Light Experiments in Ultracold Atoms

Mainstream physical theories interpret slow light phenomena in ultracold atom systems via electromagnetically induced transparency, electronic energy level transitions, and group velocity dispersion. Such interpretations only describe external experimental observations and fail to reveal the underlying origin of lightmatter interactions. Based on the Theory of Light Origin and combined with the discrimination between photon impulse effects and intrinsic energy action boundaries, this paper conducts fundamental speculative analysis on the classic ultracold atom slow light experiment. A free photon in vacuum exists in the form of energy, possessing only intrinsic energy and the speed of light, and carries no impulse of its own. Impulse is generated only at the instant when a photon is absorbed by an electron and converted into matter. The experimentally measured low speed of 17 m·s⁻¹ does not mean photons themselves are decelerated. Instead, free photons enter atoms, are captured by atomic electrons, form highenergy transient electronic states, and are reemitted after a time delay in repeated cycles. After an incident free photon is captured by an electron, it must fuse with the inherently existing gammaray photon locked inside the electron to raise the electron into a highenergy transient state. After a certain interval, the unstable highenergy electron falls back to a lowenergy state and emits only one newborn photon, whose energy is higher than that of the original incident photon. Energy inside the atom escapes outward carried by this emitted photon, which brings about ultracold atom cooling. The fact that only one photon is emitted yet with higher energy directly proves that fusion has taken place. It also demonstrates that electrons enclose gammaray photons moving at closedloop speed of light. This inference can be further extended to protons and other material particles: matter originates from gammaray photons bound by selflocking strong forces. This paper reconstructs the real underlying mechanism of lightmatter conversion, and distinguishes two interaction modes: fusion absorption and elastic collision scattering.