Paths of fluctuation induced switching |
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Authors: | Chan H B Dykman M I Stambaugh C |
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Institution: | Department of Physics, University of Florida, Gainesville, Florida 32611, USA. |
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Abstract: | We demonstrate that the paths followed by a system in fluctuation-activated switching form a narrow tube in phase space. A theory of the path distribution is developed and its direct measurement is performed in a micromechanical oscillator. The experimental and theoretical results are in excellent agreement, with no adjustable parameters. We also demonstrate the lack of time-reversal symmetry in switching of systems far from thermal equilibrium. |
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