Chen's Superstring Theory (CST): Joint Experimental Prediction of Bidirectional Phase Transitions in Ultraviolet and Infrared Catastrophes

Abstract Chen's Superstring Theory (CST) proposes that stable particles are essentially entangled foams formed by G-R-N strings through N-string elastic locking, and particles can only exist stably within the temperature window of -133°C to 3000°C. Above 3000°C, a high-temperature phase transition occurs, where RG entanglement disintegrates to generate free R-strings, corresponding to the ultraviolet catastrophe in traditional physics. Below -133°C, a low-temperature phase transition occurs, where RG entanglement disintegrates to generate free G-strings, thereby leading to the CST original prediction of the infrared catastrophe. This paper first presents the CST dual-paradigm modification of the Planck blackbody radiation formula, explaining that the "zero intensity" at the high-frequency end is not a disappearance of energy, but a phase transition where particles disintegrate into free R-strings. Subsequently, an integrated experimental apparatus is proposed to simultaneously test the CST underlying physical explanation of the ultraviolet catastrophe at the high-temperature end and the novel prediction of the infrared catastrophe at the low-temperature end. Free R-strings and G-strings do not couple to electromagnetic forces and cannot be directly observed by electromagnetic detectors. When the disintegrated free strings are reintroduced into a distal phase-transition cavity maintained within the particle survival temperature window, the R and G strings will undergo N-locking entanglement again to generate new particles, releasing transient electromagnetic pulse signals. These pulse signals possess unique spectral and temporal characteristics, which can effectively distinguish them from various spurious signals such as cavity wall background thermal radiation, fluorescence, and secondary bremsstrahlung. If the expected bidirectional transient pulse signals are observed, it will support the CST bidirectional phase transition hypothesis; if the corresponding pulses are never observed after fully deducting all interferences, the CST phase transition prediction will be falsified.