A Python GPU-accelerated solver for the Gross-Pitaevskii equation and applications to many-body cavity QED

• URL: http://arxiv.org/abs/2404.14401v2
• Date: Tue, 23 Apr 2024 17:37:29 GMT
• Title: A Python GPU-accelerated solver for the Gross-Pitaevskii equation and applications to many-body cavity QED
• Authors: Lorenzo Fioroni, Luca Gravina, Justyna Stefaniak, Alexander Baumgärtner, Fabian Finger, Davide Dreon, Tobias Donner,
• Abstract summary: TorchGPE is a general-purpose Python package developed for solving the Gross-Pitaevskii equation (GPE) This solver is designed to integrate wave functions across a spectrum of linear and non-linear potentials.
• Score: 36.136619420474766
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: TorchGPE is a general-purpose Python package developed for solving the Gross-Pitaevskii equation (GPE). This solver is designed to integrate wave functions across a spectrum of linear and non-linear potentials. A distinctive aspect of TorchGPE is its modular approach, which allows the incorporation of arbitrary self-consistent and time-dependent potentials, e.g., those relevant in many-body cavity QED models. The package employs a symmetric split-step Fourier propagation method, effective in both real and imaginary time. In our work, we demonstrate a significant improvement in computational efficiency by leveraging GPU computing capabilities. With the integration of the latter technology, TorchGPE achieves a substantial speed-up with respect to conventional CPU-based methods, greatly expanding the scope and potential of research in this field.

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