PaperPanorama
FAQ

Nuclear Theory·nucl-th

Thursday·March 6, 2025

7 papers—4 primary·3 cross-listed

All7Primary4Cross-lists3
  1. 01

    Examination of the possibility of condensation and magnetization in freely interpenetrating nuclei

    D. N. Voskresensky🇷🇺

    Conditions are found, at which in nuclear matter there may appear a spatially nonuniform wave condensate supplemented by a spatially varying spontaneous magnetization. The pion-nucleon interaction and the anomaly contributions to magnetization are taken into account. Response of the system on external magnetic field is also considered. Then the model of nonoverlapped nucleon Fermi spheres is employed. Arguments are given in favor of possibility of the occurrence of the -condensation and a spatially varying magnetization as well as effects of pronounced anisotropic pion fluctuations at finite pion momentum in peripheral heavy-ion collisions. Relevant effects such as response on the rotation, charged pion condensation and other are discussed.

    nucl-thhep-phPRC(2025)·1 citation
  2. 02

    Interacting mesons as degrees of freedom in a chiral model

    Rajesh Kumar🇺🇸 · Joaquin Grefa🇺🇸 · Konstantin Maslov🇺🇸 · Yuhan Wang🇺🇸 · Arvind Kumar🇮🇳 · Ralf Rapp🇺🇸 · Claudia Ratti🇺🇸 · Veronica Dexheimer🇺🇸

    We study the equation of state of hot and dense hadronic matter using an extended Chiral Mean Field (CMF) model framework where the addition is the inclusion of interactions of thermally excited mesons. This is implemented by calculating the in-medium masses of pseudoscalar and vector mesons, obtained through the explicit chiral symmetry-breaking and vector interaction terms in the Lagrangian, respectively, prior to applying the mean-field approximation. As a result, the in-medium meson contributions generate a feedback term to the CMF's equations of motion, which then modifies the equation of state. With this improvement, we quantify the effect on the equation of state of strongly interacting matter through comparisons with state-of-the-art lattice QCD results and other hadronic models like the Hadron Resonance Gas model. We find that the results of the updated hadronic CMF model with an improved meson description (mCMF) provide a better agreement with lattice-QCD data for thermodynamic state variables across a wide range of temperatures and baryon chemical potentials.

    nucl-thhep-phPRD(2025)·8 citations
  3. 03

    Four-dimensional QCD equation of state at finite chemical potentials

    Akihiko Monnai · Grégoire Pihan · Björn Schenke · Chun Shen

    Exploration of the QCD phase diagram is pivotal in particle and nuclear physics. We construct a full four-dimensional equation of state of QCD with net baryon, electric charge, and strangeness by extending the NEOS model beyond the conventional two-dimensional approximation. Lattice QCD calculations based on the Taylor expansion method and the hadron resonance gas model are considered for the construction. We also develop an efficient numerical method for applying the four-dimensional equation of state to relativistic hydrodynamic simulations, which can be used for the analysis of nuclear collisions at beam energy scan energies and for different nuclear species at the BNL Relativistic Heavy Ion Collider.

    nucl-thhep-phnucl-exPoS(2025)·2 citations
  4. 04

    Dissipative currents and transport coefficients in relativistic spin hydrodynamics

    Asaad Daher🇵🇱 · Xin-Li Sheng🇮🇹 · David Wagner🇮🇹 · Francesco Becattini🇮🇹

    We determine the form of dissipative currents at the first order in relativistic spin hydrodynamics with finite chemical potential including gradients of the spin potential. Taking advantage of isotropy in the hydrodynamic local rest frame, using a suitable matching condition for the flow velocity and enforcing the semi-positivity of entropy production, we find 23 dissipative transport coefficients relating dissipative currents to gradients of the thermo-hydrodynamic fields: 4 for the symmetric part of the energy-momentum tensor, 5 for the antisymmetric part, 3 for the conserved vector current, and 11 for the spin tensor. We compare our finding with previous results in literature.

    nucl-thhep-phPRD(2025)·11 citations

Affiliations

first authorsco-authorsvia INSPIRE