Nuclear responses with neural-network quantum states
Fuente:
arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866912352829440000 |
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| author | Parnes, Elad Barnea, Nir Carleo, Giuseppe Lovato, Alessandro Rocco, Noemi Zhang, Xilin |
| author_facet | Parnes, Elad Barnea, Nir Carleo, Giuseppe Lovato, Alessandro Rocco, Noemi Zhang, Xilin |
| contents | We introduce a variational Monte Carlo framework that combines neural-network quantum states with the Lorentz integral transform technique to compute the dynamical properties of self-bound quantum many-body systems in continuous Hilbert spaces. While broadly applicable to various quantum systems, including atoms and molecules, in this initial application we focus on the photoabsorption cross section of light nuclei, where benchmarks against numerically exact techniques are available. Our accurate theoretical predictions are complemented by robust uncertainty quantification, enabling meaningful comparisons with experiments. We demonstrate that a simple nuclear Hamiltonian, based on a leading-order pionless effective field theory expansion and known to accurately reproduce the ground-state energies of nuclei with $A\leq 20$ nucleons also provides a reliable description of the photoabsorption cross section. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_20195 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nuclear responses with neural-network quantum states Parnes, Elad Barnea, Nir Carleo, Giuseppe Lovato, Alessandro Rocco, Noemi Zhang, Xilin Nuclear Theory Disordered Systems and Neural Networks Quantum Physics We introduce a variational Monte Carlo framework that combines neural-network quantum states with the Lorentz integral transform technique to compute the dynamical properties of self-bound quantum many-body systems in continuous Hilbert spaces. While broadly applicable to various quantum systems, including atoms and molecules, in this initial application we focus on the photoabsorption cross section of light nuclei, where benchmarks against numerically exact techniques are available. Our accurate theoretical predictions are complemented by robust uncertainty quantification, enabling meaningful comparisons with experiments. We demonstrate that a simple nuclear Hamiltonian, based on a leading-order pionless effective field theory expansion and known to accurately reproduce the ground-state energies of nuclei with $A\leq 20$ nucleons also provides a reliable description of the photoabsorption cross section. |
| title | Nuclear responses with neural-network quantum states |
| topic | Nuclear Theory Disordered Systems and Neural Networks Quantum Physics |
| url | https://arxiv.org/abs/2504.20195 |