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Nuclear Theory·nucl-th

Friday·October 10, 2025

18 papers—12 primary·6 cross-listed

All18Primary12Cross-lists6
  1. 13

    [Submitted on 8 Oct 2025] (cross-list from cond-mat.supr-con)

    Superfluidity in Fermi systems within the framework of Density Functional Theory

    Piotr Magierski

    This review is based on lectures given by the author at the Enrico Fermi Summer School in Varenna. It presents the basics of Density Functional Theory (DFT) for Fermi superfluids, with particular emphasis on nuclear systems. Special attention is given to the foundations of both DFT and time-dependent DFT (TDDFT). The review explores the advantages and challenges involved in the practical application of TDDFT to superfluid systems, as well as the typical approximations employed. Various applications of the TDDFT framework to the description of phenomena related to nonequilibrium superfluidity in atomic nuclei, neutron stars, and ultracold atoms are discussed.

    Comments:
    37 pages, 6 figures
    Subjects:
    Superconductivity (cond-mat.supr-con); Quantum Gases (cond-mat.quant-gas); Nuclear Theory (nucl-th)
    arXiv:
    2510.07410 [pdf]
    1 citation
  2. 14

    [Submitted on 8 Oct 2025] (cross-list from hep-ph)

    Charged scalar bosons under rotation and acceleration

    M. Bordag🇷🇺 · D. N. Voskresensky🇷🇺

    Creation of charged spinless bosons from vacuum in the rigidly rotating frame is studied in presence of the external static electromagnetic fields, being formed either in the resting, or in the general rotating or in the local-flat frames. It is shown that the description remains the same in the resting and the local-flat frames. More specifically, the case of a solenoid (magnetic flux tube) embedded into the rotating empty cylinder (rotation frame) is studied in presence or absence of a static square electric potential well . A supervortex of a spinless-boson field can be created from vacuum when the rotation frequency exceeds a critical value . It is shown that is smaller provided the solenoid rests in the resting frame. Then the case is considered when the rotating frame additionally moves with acceleration . A specific case for is treated explicitly. It is shown that for the charged spinless-boson vortex can be created in rapidly rotating system even in the limit when the magnetic and electric fields tend to zero.

    Comments:
    13 pages
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Quantum Gases (cond-mat.quant-gas); Nuclear Theory (nucl-th)
    arXiv:
    2510.07438 [pdf]
    Phys.Part.Nucl.Lett.(2026)·2 citations
  3. 15

    [Submitted on 9 Oct 2025] (cross-list from astro-ph.HE)

    GPU-Accelerated X-ray Pulse Profile Modeling

    Tianzhe Zhou · Chun Huang

    Pulse-profile modeling (PPM) of thermal X-ray emission from rotation-powered millisecond pulsars enables simultaneous constraints on the mass , radius , and hence the equation of state of cold, dense matter. However, Bayesian PPM has faced a hard accuracy-speed bottleneck: current production resolutions used to keep inference tractable can under-resolve extreme hotspot geometries and bias the waveform computation, whereas the higher resolutions that remove this bias push forward models to minutes per evaluation, making inference impractical. We break this trade-off with, to our knowledge, the first public GPU-accelerated X-ray PPM framework that matches established benchmarks to within relative accuracy even for extreme geometries, while collapsing minutes-long high-fidelity computations to -- ms on an RTX 4080 (-- speedups), enabling posterior exploration at resolutions and complexities previously out of reach. We further uncover a bias near the interpolation boundaries of atmosphere lookup tables, demonstrate it with two diagnostic tests, and counter it with a mixed-order interpolator. Together, these advances enlarge the feasible hotspot model space and reduce key systematics in PPM, strengthening inferences for current and future X-ray missions.

    Comments:
    Accepted publication in A&A, GitHub repository of this work: https://github.com/zhoutz/gpu_ppm
    Subjects:
    High Energy Astrophysical Phenomena (astro-ph.HE); Instrumentation and Methods for Astrophysics (astro-ph.IM); Solar and Stellar Astrophysics (astro-ph.SR); General Relativity and Quantum Cosmology (gr-qc); Nuclear Theory (nucl-th)
    arXiv:
    2510.07764 [pdf]
    Astron.Astrophys.(2026)·3 citations
  4. 16

    [Submitted on 9 Oct 2025] (cross-list from hep-ph)

    Recent advances in perturbative QCD at high density

    Pablo Navarrete🇫🇮 · Aleksi Vuorinen🇫🇮

    In these conference proceedings, we discuss recent progress in high-order perturbative studies of the thermodynamic and transport properties of dense quark matter. Special emphasis is placed on the introduction of a promising new computational tool, thermal Loop Tree Duality, which enables pushing the existing weak-coupling calculations to higher perturbative orders.

    Comments:
    13 pages, 2 figures. Contribution to the proceedings of the 21st International Conference on QCD in Extreme Conditions, Wroclaw, Poland, 2-4 July 2025. v2: improved sections 2.1 and 3
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    2510.08215 [pdf]
    J.Subatomic Part.Cosmol.(2026)·1 citation
  5. 17

    [Submitted on 9 Oct 2025] (cross-list from hep-ph)

    Gluon splitting at small : a unified derivation for the JIMWLK, DGLAP and CSS equations

    Paul Caucal🇫🇷 · Edmond Iancu🇫🇷 · Farid Salazar🇺🇸 · Feng Yuan🇺🇸

    We revisit the calculation of the next-to-leading order (NLO) corrections to dijet production in electron-ion collisions at small . We focus on the back-to-back configuration where the relative transverse momentum of the measured jets is much larger than both their momentum imbalance and the target saturation momentum . In this regime, we present for the first time a complete calculation of the real NLO corrections at leading power in . Our result exhibits TMD factorisation, with the same hard factor as at tree-level and a NLO correction to the Weiszäcker-Williams (WW) gluon transverse momentum dependent (TMD) distribution which involves four Wilson-line operators. By studying different kinematical regimes for and for the radiated gluon, we recover all the quantum evolutions that were previously identified for this process at NLO: the B-JIMWLK high-energy evolution and the CSS evolution of the gluon WW TMD, and the DGLAP evolution of the gluon PDF. When both and the transverse momentum transferred by the target are large compared to , all the Wilson-line operators boil down to the unintegrated gluon distribution and our NLO result for the gluon TMD can be used to isolate the transverse-momentum dependent gluon splitting function.

    Comments:
    47 pages, 3 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    2510.08454 [pdf]
    JHEP(2026)·13 citations
  6. 18

    [Submitted on 9 Oct 2025] (cross-list from astro-ph.HE)

    Gamma-Ray Spectra of -Process Nuclei

    Axel Gross · Samuel Cupp · Matthew R Mumpower

    The radioactive decay of unstable nuclei created in the rapid neutron capture process releases a large amount of -rays. When the ejecta are optically thick, these -rays may contribute to an associated kilonova. Once transparent, prominent spectral features will be directly observable in current and future -ray detectors. In this work, we study and compare the -ray spectra of different representative -process trajectories across a broad range of timescales, from hours to 50,000 years, identifying the nuclei which significantly contribute. We discuss these findings in the context of observability, noting that there are several practical challenges to connecting observed signatures to specific nuclei. However, if these challenges can be overcome, direct observation of -rays from -process sites can provide insight into the fundamental physics underpinning the -process.

    Comments:
    53 pages, 8 figures, 1 table
    Subjects:
    High Energy Astrophysical Phenomena (astro-ph.HE); Solar and Stellar Astrophysics (astro-ph.SR); Nuclear Theory (nucl-th)
    arXiv:
    2510.08560 [pdf]
    ApJ(2026)·2 citations

Affiliations

first authorsco-authorsvia INSPIRE