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- W4310646959 abstract "Despite their formal simplicity, most lattice spin models cannot be easily solved, even under the simplifying assumptions of mean field theory. In this manuscript, we present a method for generating mean field solutions to classical continuous spins. We focus our attention on systems with non-local interactions and non-periodic boundaries, which require careful handling with existing approaches, such as Monte Carlo sampling. Our approach utilizes functional optimization to derive a closed-form optimality condition and arrive at self-consistent mean field equations. We show that this approach significantly outperforms conventional Monte Carlo sampling in convergence speed and accuracy. To convey the general concept behind the approach, we first demonstrate its application to a simple system - a finite one-dimensional dipolar chain in an external electric field. We then describe how the approach naturally extends to more complicated spin systems and to continuum field theories. Furthermore, we numerically illustrate the efficacy of our approach by highlighting its utility on nonperiodic spin models of various dimensionality." @default.
- W4310646959 created "2022-12-14" @default.
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- W4310646959 date "2022-06-07" @default.
- W4310646959 modified "2023-09-27" @default.
- W4310646959 title "A directed walk in probability space that locates mean field solutions to spin models" @default.
- W4310646959 doi "https://doi.org/10.48550/arxiv.2206.03616" @default.
- W4310646959 hasPublicationYear "2022" @default.
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