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arXiv · 2508.09252

$\textit{Ab Initio}$ Exact Calculation of Strongly Correlated Nucleonic Matter

Rongzhe Hu·Shaoliang Jin·Xin Zhen·Haoyu Shang·Junchen Pei·Furong Xu·Francesco Marino
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Abstract

Dense nucleonic matter is of vital importance for understanding compact stars and inferring the transition into deconfined quark phase. We present $\textit{ab initio}$ exact calculations of infinite nucleonic matter with the state-of-the-art full configuration-interaction quantum Monte Carlo method, enabling us to rigorously benchmark many-body methods and assess the degree to which the nucleonic matter is correlated. Our method has been numerically validated against exact diagonalization within a small model space. Calculations of nucleonic matter using chiral nuclear forces reveal that symmetric nuclear matter is strikingly strongly correlated, raising questions on previous $\textit{ab initio}$ calculations of nuclear matter with many-body expansion truncations and offering insights into simultaneous descriptions of finite nuclei and infinite nucleonic matter from first principles.

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Rongzhe Hu, Shaoliang Jin, Xin Zhen, Haoyu Shang, Junchen Pei, Furong Xu, Francesco Marino. 2025-08-12. $\textit{Ab Initio}$ Exact Calculation of Strongly Correlated Nucleonic Matter. https://doi.org/10.1103/q4p2-r1bt

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