We develop an efficient sampling method by simulating Langevin dynamics with an artificial force rather than a natural force by using the gradient of the potential energy. The standard technique for sampling following the predetermined distribution such as the Gibbs- Boltzmann one is performed under the detailed balance condition. In the present study, we propose a modified Langevin dynamics violating the detailed balance condition on the transition- probability formulation. We confirm that the numerical implementation of the proposed method actually demonstrates two major beneficial improvements: acceleration of the relaxation to the predetermined distribution and reduction of the correlation time between two different realizations in the steady state.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2015 Sept 3|
|Event||8th International Conferences on Statistical Physics, Statphys-Kolkata 2014 - Kolkata, India|
Duration: 2014 Dec 1 → 2014 Dec 5