PaperPanorama
FAQ

Nuclear Theory·nucl-th

Monday·August 25, 2025

6 papers—3 primary·3 cross-listed

All6Primary3Cross-lists3
  1. 01

    [Submitted on 22 Aug 2025]

    Causality and Stability in Relativistic Hydrodynamics

    Sukanya Mitra

    The causality and stability of a relativistic hydrodynamic theory is shown to require a consensus between, either (i) newer degrees of freedom apart from the fundamental fluid fields, or (ii) a general hydrodynamic frame other than the Landau or Eckart compromising the field's first principle definition, unless the non-equilibrium derivative correction goes to infinity. Any finitely truncated derivative correction (no matter how high it is) is shown to lead to an acausal theory, unless the corrections are infinitely summed up to include all orders. From an underlying microscopic theory, an exact form of relativistic hydrodynamics has been derived which establishes that the resummation of all order temporal derivatives is essential for causality, which finally 'integrated in' as newer degrees of freedom.

    Comments:
    Conference proceedings of ATHIC, Jan 13-16, 2025
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th)
    arXiv:
    2508.16127 [pdf]
    J.Subatomic Part.Cosmol.(2025)·1 citation
  2. 02

    [Submitted on 22 Aug 2025]

    Transport coefficients of hot and dense matter in relativistic heavy-ion collisions

    Sukanya Mitra🇮🇳

    The transport coefficients are known as the measure of system interactions, as well as the dynamical input of the hydrodynamic evolution equations of an expanding system created in the relativistic heavy ion collisions. In the current analysis, they have been evaluated for strongly interacting quark-gluon plasma system as well as hot hadronic media. The medium effects for an interacting QCD system have been introduced through a quasiparticle model. The same for a hadronic system has been captured via the in-medium self-energy correction using thermal field theory. The resulting behavior of the transport coefficients shows significant modification with respect to the estimations made in vacuum or using ideal equation of state.

    Comments:
    Conference proceeding at ICPAQGP, 7-10 February 2023
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th)
    arXiv:
    2508.16130 [pdf]
    J.Subatomic Part.Cosmol.(2025)·0 citations
  3. 03

    [Submitted on 22 Aug 2025]

    Accurate spontaneous fission half-lives from a microscopic large-scale nuclear structure model

    Adrián Sánchez-Fernández · Silvia Bara · Wouter Ryssens · Stéphane Goriely

    We demonstrate the ability of the BSkG3 model to predict large-scale fission properties. In particular, we focus on the description of spontaneous fission half-lives, which are crucial for modeling the r-process. To assess the model accuracy, we compare predicted and experimental values for all nuclei with available data. The combination of BSkG3 predictive power for ground state and fission properties, the inclusion of triaxial and octupole degrees of freedom, the use of microscopic collective inertias, and the minimization of the action make our approach sophisticated yet practical when it comes to large-scale astrophysical applications.

    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2508.16240 [pdf]
    PLB(2026)·5 citations

Affiliations

first authorsco-authorsvia INSPIRE