11 June 2007 Does measurement noise increase as a phase transition is approached?
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Proceedings Volume 6600, Noise and Fluctuations in Circuits, Devices, and Materials; 66001Y (2007) https://doi.org/10.1117/12.725521
Event: SPIE Fourth International Symposium on Fluctuations and Noise, 2007, Florence, Italy
Abstract
We study the energy and magnetization noise spectra associated with first and second order phase transitions by using Monte Carlo simulations of the Ising model and 5-state Potts model in 2D. For a finite size system, the total noise power and the low frequency white noise S(f < fknee) increase as Tc is approached. In the thermodynamic limit S(f < fknee) diverges but fknee → 0 and the total noise power vanishes. f-1knee is approximately the equilibration time. At high frequencies S(f > fknee) ~ f. For the Ising model, we relate μ to the critical exponents.
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Zhi Chen, Zhi Chen, Clare C. Yu, Clare C. Yu, "Does measurement noise increase as a phase transition is approached?", Proc. SPIE 6600, Noise and Fluctuations in Circuits, Devices, and Materials, 66001Y (11 June 2007); doi: 10.1117/12.725521; https://doi.org/10.1117/12.725521
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