Resonant paramagnetic enhancement of the thermal and zero-point Nyquist noise |
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Institution: | 1. Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan 430205, China;2. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China;3. Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, China;4. Hebei Provincial Environmental Meteorological Center, Shijiazhuang 050021, China |
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Abstract: | The interaction between a very thin macroscopic solenoid, and a single magnetic particle precessing in a external magnetic field B0, is described by taking into account the thermal and the zero-point fluctuations of stochastic electrodynamics. The inductor belongs to a RLC circuit without batteries and the random motion of the magnetic dipole generates in the solenoid a fluctuating current Idip(t), and a fluctuating voltage εdip(t), with spectral distribution quite different from the Nyquist noise. We show that the mean square value 〈Idip2〉 presents an enormous variation when the frequency of precession approaches the frequency of the circuit, but it is still much smaller than the Nyquist current in the circuit. However, we also show that 〈Idip2〉 can reach measurable values if the inductor is interacting with a macroscopic sample of magnetic particles (atoms or nuclei) which are close enough to its coils. |
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