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Mo-Xian Qian

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#machine learning Preprint Jul 2026

Neural Non-Equilibrium Hamiltonian Monte Carlo for Corrected Boltzmann Sampling

Sampling from an unnormalized Boltzmann density requires proposals that move probability mass globally while retaining enough path-probability information for statistical correction. We introduce Neural Non-Equilibrium Hamiltonian Monte Carlo (NHMC), a train-then-correct learned Hamiltonian sampler. Starting from a tra...

Mo-Xian Qian · 1 citation
#machine learning Preprint May 2026

Operator-Guided Model Reduction for Generative Sampling in Lattice Field Theory

Neural generative samplers for lattice field theory can be costly to train and evaluate. When they miss modes or assign them incorrect relative weights, biased observables do not reveal which collective variables are responsible. We project a trained flow-matching velocity onto vector fields built from lattice operator...

Mo-Xian Qian · 0 citations

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