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Poster
in
Workshop: Machine Learning and the Physical Sciences

Combinational-convolution for flow-based sampling algorithm

Akio Tomiya


Abstract: We propose a new class of efficient layer called {\it CombiConv} (Combinational-convolution) that improves the acceptance rate for the flow-based sampling algorithm for quantum field theory on the lattice. CombiConv is made from a d-dimensional convolution out of lower k-dimensional \mycombdk convolutions and combining their outputs, and CombiConv has fewer parameters than the standard convolutions.We apply CombiConv to the flow-based sampling algorithm,Furthermore, we find that for every d=2,3,4-dimensional scalar ϕ4 theory CombiConv for k=1 achieves a higher acceptance rate than others.

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