We consider the quantization of LC (inductance-capacitance) circuit at a finite temperature T as any practical circuits always produce Joule heat except for superconductivity. It is shown that the quantum mechanical zeropoint fluctuations of both charge and current increase with upgoing T. Thermal field dynamics is used in our discussion.
- FAN Hong-Yi, LIANG Xian-Ting. Quantum Fluctuation in Thermal Vacuum State for Mesoscopic LC Electric Circuit[J]. CPL, 2000, 17(3): 174-176.