Paths of fluctuation induced switching

Details Paths of fluctuation induced switching Paths of fluctuation induced switching

2008-02-24

arxiv.org/abs/0802.3533v1

Physics

Condensed Matter

Statistical Mechanics

Accepted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.100.130602

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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