Quantum Fluctuation of Mesoscopic Capacitance Coupled Circuit
in a Thermal Vacuum State
ZHU Ai-Dong1, ZHANG Shou1,2, JIN Zh1, ZHAO Yong-Fang2, JING Xiao-Gong2, QIAN Zheng-Nan2, SU Wen-Hui2
1Department of Physics, College of Science and Engineering, Yanbian University, Yanji 133002
2Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001
Quantum Fluctuation of Mesoscopic Capacitance Coupled Circuit
in a Thermal Vacuum State
1Department of Physics, College of Science and Engineering, Yanbian University, Yanji 133002
2Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001
Abstract： The quantum fluctuations of mesoscopic capacitance-coupled circuit in thermal vacuum state are investigated by using the theory of thermal field dynamics on the basis of quantization of the mesoscopic circuit. It is shown that under a definite temperature, the fluctuations of electric charges and currents change with temperature. The higher the temperature, the more quantum noise the coupled circuit exhibits.
2003, Vol. 20 
