Physical phenomena for zero temperature limit

Physical phenomena at the zero temperature limit are studied in the field of accelerator physics. Experimental techniques have been developed to achieve temperatures approaching 0 K. As the universe expands, its background temperature continuously decreases. The energy density of thermal radiation is depicted as a function of temperature across different dimensions. In superconducting cavities, the surface resistance reduces to residual resistance at 0 K. The resistivity of various material types is presented in terms of temperature, and the thermal expansion of solid materials is also illustrated in terms of dimension. Blackbody radiation ceases at 0 K, along with thermal diffusion and thermal noise. However, quantum diffusion and zero-point noise persist at 0 K. With the exception of helium, all gases solidify at this temperature. Despite being at 0 K, zero-point energy still exists, and fundamental forces remain active. Moreover, black holes are expected to evaporate at 0 K, and the evaporation rate of black holes is calculated under these conditions.