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    Mouyang Cheng

    Mouyang Cheng

    AI for materials | Computational physics | Mingda Li Group, MIT

    • PhD candidate working on AI for physics and materials
    • Cambridge, MA, U.S.
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    • Google Scholar

    Blog

    Short technical notes on computational physics, many-body algorithms, and numerical methods.

    Something (more) quantum

    • Quantum Defects as Sensors, Single-Photon Emitters, and Qubits
    • A Tutorial Introduction to the Transmon Qubit
    • Time-Dependent NNQMC, LVM, and Canonical AFQMC

    Materials

    • Transport Regimes: When Boltzmann Breaks Down
    • Simulating Optical Properties: From Kubo Formula to GW-BSE
    • Reading X-ray Absorption Spectra: Edges, Regions, and First-Principles Models

    Methods

    • Discrete Diffusion: Uniform Noise and Masked Noise
    • How to Tackle Long-Step Gradients
    • How to Calculate Free Energy: TI, FEP, MBAR, and SSCHA
    • Radon-Nikodym, Girsanov, and Diffusion Flow Cheat Sheet
    • Target Score Identity and Denoising Score Identity in Diffusion Models