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arXiv · 2312.05340

Transition Path Sampling with Boltzmann Generator-based MCMC Moves

Michael Plainer·Hannes Stärk·Charlotte Bunne·Stephan Günnemann
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Abstract

Sampling all possible transition paths between two 3D states of a molecular system has various applications ranging from catalyst design to drug discovery. Current approaches to sample transition paths use Markov chain Monte Carlo and rely on time-intensive molecular dynamics simulations to find new paths. Our approach operates in the latent space of a normalizing flow that maps from the molecule's Boltzmann distribution to a Gaussian, where we propose new paths without requiring molecular simulations. Using alanine dipeptide, we explore Metropolis-Hastings acceptance criteria in the latent space for exact sampling and investigate different latent proposal mechanisms.

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Michael Plainer, Hannes Stärk, Charlotte Bunne, Stephan Günnemann. 2023-12-08. Transition Path Sampling with Boltzmann Generator-based MCMC Moves. https://arxiv.org/abs/2312.05340

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