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Creators/Authors contains: "Peng, Ruojing"

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  1. ; ; ; ; ; ; ; (, Physical Review Research)
    We describe our implementation of fermionic tensor network contraction on arbitrary lattices within both a globally ordered and a locally ordered formalism. We provide a pedagogical description of these two conventions as implemented for the quimb library. Using hyperoptimized approximate contraction strategies, we present benchmark fermionic projected entangled pair state simulations of finite Hubbard models defined on the three-dimensional diamond lattice and random regular graphs. Published by the American Physical Society2025 
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    Free, publicly-accessible full text available May 1, 2026
  2. ; ; ; ; (, Physical Review Letters)
  3. ; ; ; ; ; ; ; ; ; ; et al (, The Journal of Chemical Physics)
    block2 is an open source framework to implement and perform density matrix renormalization group and matrix product state algorithms. Out-of-the-box it supports the eigenstate, time-dependent, response, and finite-temperature algorithms. In addition, it carries special optimizations for ab initio electronic structure Hamiltonians and implements many quantum chemistry extensions to the density matrix renormalization group, such as dynamical correlation theories. The code is designed with an emphasis on flexibility, extensibility, and efficiency and to support integration with external numerical packages. Here, we explain the design principles and currently supported features and present numerical examples in a range of applications. 
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  4. ; ; ; (, The Journal of Chemical Physics)