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Nuclear Theory·nucl-th

Monday·November 6, 2023

8 papers—3 primary·5 cross-listed

All8Primary3Cross-lists5
  1. 01

    Determining the neutron skin thickness by relativistic semi-isobaric collisions

    Qi Liu🇨🇳 · Shujun Zhao🇨🇳 · Hao-jie Xu🇨🇳 · Huichao Song🇨🇳

    The neutron skin thickness of the benchmark nucleus Pb is crucial for our understanding of the equation of state of nuclear matter. In this paper, we discuss the effect of the neutron skin on the flow ratio observables in the semi-isobaric collisions Pb+Pb and Au+Au using iEBE-VISHNU hydrodynamic simulations. Our results suggest that Pb and Au should have the same magnitude of neutron skin thickness to describe the anisotropic flow ratios between the semi-isobaric systems. Our method provides an unconventional way to determine the neutron skin with the existing relativistic heavy ion collision data.

    nucl-thPRC(2024)·20 citations
  2. 02

    Low energy nuclear reactions in a crystal lattice

    Harishyam Kumar · Pankaj Jain · K. Ramkumar

    We extend the recently proposed mechanism for inducing low energy nuclear reactions (LENRs) to a crystal lattice. The process gets a dominant contribution at second order in quantum perturbation theory. The tunnelling barrier is evaded due to the presence of high energy intermediate states. However, the process is found to have a negligible rate in free space due to a delicate cancellation between amplitudes corresponding to different states. The delicate cancellation can be evaded in medium in special circumstances leading to an observable rate. Here we consider this process in a one dimensional crystal lattice and find that the rate depends strongly on the form of interaction. We find that for some allowed choices of interactions, the rate is substantial, while other interactions produce a very small rate.

    nucl-th3 citations
  3. 03

    Correlations of Conserved Quantities at Finite Baryon Density

    Oleh Savchuk🇺🇸 · Scott Pratt🇺🇸

    Correlations involving the seven conserved quantities, namely energy, baryon number, electric charge, strangeness, and the three components of momentum, give rise to correlations in heavy-ion collisions. Through the utilization of a simple one-dimensional hydrodynamic model, we calculate the evolution of the entire matrix of correlations as a function of relative spatial rapidity. This comprehensive analysis accounts for finite baryon density, which results in off-diagonal correlations between the charge-related quantities and the energy-momentum quantities. These correlations in coordinate space are subsequently transformed into correlations in momentum space using statistical weighting. The entire matrix of correlations is revealed to be highly sensitive to the equation of state (EoS), viscosity, and diffusivity.

    nucl-thhep-phPRC(2024)·6 citations

Affiliations

first authorsco-authorsvia INSPIRE