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Direct Numerical Solutions to Stochastic Differential Equations with Multiplicative Noise
1Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, USA.
Abstract:
Inspired by path integral solutions to the quantum relaxation problem, we develop a numerical method to solve classical stochastic differential equations with multiplicative noise that avoids averaging over trajectories. To test the method, we simulate the dynamics of a classical oscillator multiplicatively coupled to non-Markovian noise. When accelerated using tensor factorization techniques, it accurately estimates the transition into the bifurcation regime of the oscillator and outperforms trajectory-averaging simulations with a computational cost that is orders of magnitude lower.
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