PaperPanorama
FAQ

Nuclear Theory·nucl-th

Thursday·January 9, 2025

10 papers—3 primary·7 cross-listed

All10Primary3Cross-lists7
  1. 01

    [Submitted on 8 Jan 2025]

    Clusterization aspects in the states of non-rotating and fast rotating nuclei

    A. V. Afanasjev

    The understanding of clustering aspects at the ground state of nuclei and in fast rotating ones within the framework of covariant density functional theory has been reviewed and reanalyzed. The appearance of many exotic nuclear shapes in nuclear chart can be inferred from combined analysis of nodal structure of the densities of the single-particle states and the evolution of such states in the Nilsson diagram with deformation and particle number. Such analysis which is supported by fully self-consistent calculations allows to predict the existence of nuclear configurations with specific shape or cluster properties at ground state and at high spin. For example, it indicates that in a given shell with principal quantum number only the lowest in energy two-fold degenerate deformed state can contribute to the formation of linear chain cluster structures.

    Comments:
    7 pages, 4 figures
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2501.04198 [pdf]
    EPJ Web Conf.(2024)·0 citations
  2. 02

    [Submitted on 8 Jan 2025]

    Dark matter effects on the properties of quark stars and the implications for the peculiar objects

    Hong-Ming Liu🇨🇳 · Peng-Cheng Chu🇨🇳 · He Liu🇨🇳 · Xiao-Hua Li🇨🇳 · Zeng-Hua Li🇨🇳

    We systematically investigate the observable properties of dark matter-admixed quark stars (DQSs) using the confined-isospin-density-dependent-mass model in combination with the generic bosonic self-interacting dark matter model. Our results show that the dark matter (DM) can significantly influence the properties of quark stars including the mass, radius, and the central pressure at the maximum mass configurations. Moreover, we observe that the mass of DMparticles and the DMfraction significantly affect the types of stellar configurations, and we study these configurations in detail under various scenarios and predict the possibility that two recently observed peculiar objects HESS J1731-347 and PSR J014-4002E are DQSs.

    Comments:
    13 pages, 10 figures
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2501.04382 [pdf]
    EPJC(2026)·5 citations
  3. 03

    [Submitted on 8 Jan 2025]

    Effective action for relativistic hydrodynamics from Crooks fluctuation theorem

    Nicki Mullins🇺🇸 · Mauricio Hippert🇧🇷 · Jorge Noronha🇺🇸

    A new effective theory framework for fluctuating hydrodynamics in the relativistic regime is derived using standard thermodynamical principles and general properties of non-equilibrium stochastic dynamics. For the first time, we establish clear and concise conditions for ensuring that the resulting effective theories are causal, stable, and well-posed within general relativity. These properties are independent of spacetime foliation and are valid in the full nonlinear regime. Out-of-equilibrium fluctuations are constrained by a relativistically covariant version of Crooks fluctuation theorem, which determines how the entropy production is distributed even when the system is driven by an external force. This leads to an emerging symmetry responsible for imposing fluctuation-dissipation relations for n-point correlation functions, which matches the standard constraints for the Schwinger-Keldysh effective action.

    Comments:
    7 pages + supplemental material (11 pages)
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th)
    arXiv:
    2501.04637 [pdf]
    PRL(2025)·9 citations

Affiliations

first authorsco-authorsvia INSPIRE