PaperPanorama
FAQ

Nuclear Theory·nucl-th

Monday·January 5, 2026

6 papers—3 primary·3 cross-listed

All6Primary3Cross-lists3
  1. 01

    [Submitted on 1 Jan 2026]

    Revisiting p-B Fusion: Updated Cross-sections, Reactivity, and Energy Balance

    Hong-Yi Wang · Yu-Qi Li · Qian Wu · Zhu-Fang Cui

    Recent experimental progress has substantially improved the available cross-section data for the p-B fusion reaction, particularly in energy regions that previously lacked direct measurements. In this study, we develop a high-precision analytical parameterization of the p-B reaction cross-section over the 0--10 MeV energy range, incorporating the new experimental data into a continuous and numerically efficient representation. Using this parameterization, we evaluate the thermonuclear reactivity of the p-B reaction and examine the effects of the dominant resonance at 0.6 MeV and a newly observed resonance around 4.7 MeV. Furthermore, we assess the energy balance by analyzing the fusion power density and the electron bremsstrahlung power density. Our results indicate that p-B fusion is not precluded by bremsstrahlung constraints when contemporary cross-section data and self-consistent thermal modeling are employed.

    Comments:
    9 pages, 9 figures, 1 table
    Subjects:
    Nuclear Theory (nucl-th); High Energy Astrophysical Phenomena (astro-ph.HE); Nuclear Experiment (nucl-ex); Plasma Physics (physics.plasm-ph)
    arXiv:
    2601.00241 [pdf]
    2 citations
  2. 02

    [Submitted on 1 Jan 2026]

    Toward Quantum Simulations of Atomic Nuclei Using Noisy Qubits

    Chongji Jiang🇨🇳 · Junchen Pei🇨🇳 · Rongzhe Hu🇨🇳 · Shaoliang Jin🇨🇳 · Haoyu Shang🇨🇳 · Siqin Fan🇨🇳 · Furong Xu🇨🇳

    Quantum computers are expected to provide a ultimate solver for quantum many-body systems, although it is a tremendous challenge to achieve that goal on current noisy quantum devices. This work illustrated quantum simulations of ab initio no-core shell model calculations of H with chiral two-nucleon and three-nucleon forces. The measurement costs are remarkably reduced by using the general commutativity measurement together with the asymptotic optimization. In addition, the noise causes serious contaminations of configurations with undesired particle numbers, and the accuracies are much improved by applying the particle number projected measurement. By tackling the efficiency and noise issues, this work demonstrated a substantial step toward ab initio quantum computing of atomic nuclei.

    Comments:
    4 pages, 2 figures; under review
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2601.00315 [pdf]
    Sci.Bull.(2026)·2 citations
  3. 03

    [Submitted on 2 Jan 2026]

    Comparison of Relativistic and Non-relativistic Faddeev calculations for Proton-Deuteron Elastic Scattering

    H. Kamada · A. Arslanaliev · Y. Kostylenko · A. V. Shebeko · J. Golak · R. Skibiński · K. Topolnicki · V. Chahar · D. F. Ramírez Jiménez · H. Witała · W. N. Polyzou

    This investigation compares non-relativistic and relativistic nucleon-nucleon potentials in the context of proton-deuteron scattering. Conventional NN potentials (e.g., CDBonn, AV18, Nijmegen) rely on the nonrelativistic Schroedinger equation, whereas the Kharkiv potential is intrinsically relativistic. We employ the Coester-Pieper-Serduke (CPS) and Kamada-Gloeckle (KG) conversion methods to construct a phenomenological-relativistic potential (PRP) from a realistic NN potential, preserving the deuteron binding energy and phase shifts. Focusing on relativistic effects and not including Coulomb forces to avoid complexity, the solutions are compared by solving relativistic and nonrelativistic Faddeev equations. Calculations of the differential cross section using the relativistic Faddeev equation show that relativistic effects - particularly the deviation at the backward angle - become pronounced at 135 MeV. The differences in the forward angle were attributed to the characteristics of the Kharkiv potential itself. The reverse transformation of the Kharkiv potential into a pseudo-nonrelativistic potential (PNRP) confirms that the backward-angle relativistic effect increases with energy in the range from 100 MeV to 400 MeV. Comparisons of the polarization observables indicate that relativistic effects, as well as the discrepancy between the CPS and KG transformations, become significant above 300 MeV. However, for polarization observations below 300 MeV, the nonrelativistic results from PNRP do not deviate significantly from relativistic calculations.

    Comments:
    8 pages, 11 figures
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2601.00534 [pdf]
    PRC(2026)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE