SmoQyDQMC.jl: A flexible implementation of determinant quantum Monte Carlo for Hubbard and electron-phonon models*

We introduce the SmoQyDQMC.jl package, a Julia implementation of the determinant quantum Monte Carlo (DQMC) algorithm. SmoQyDQMC.jl supports generalized tight-binding Hamiltonians with on-site Hubbard and generalized electron-phonon (e-ph) interactions, including both Su-Schrieffer-Heeger and Holstein-like e-ph interactions. Our implementation primarily employs hybrid Monte Carlo updates to sample the phonon fields, enabling efficient simulation of low-energy phonon branches, including acoustic phonons. The SmoQyDQMC.jl package also adopts a flexible scripting interface, allowing users to adapt it to complex workflows that require interfacing with other scientific computing packages in the Julia ecosystem.