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Relaxation rate of a stochastic spreading process in a closed ring
Daniel Hurowitz1, Doron Cohen1
1Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
Abstract:
The relaxation process of a diffusive ring becomes underdamped if the bias (so-called affinity) exceeds a critical threshold value, also known as the delocalization transition. This is related to the spectral properties of the pertinent stochastic kernel. We find the dependence of the relaxation rate on the affinity and on the length of the ring. Additionally we study the implications of introducing a weak link into the circuit and illuminate some subtleties that arise while taking the continuum limit of the discrete model.
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