A5086836863- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Nuclear physics research studies
- Particle physics theoretical and experimental studies
- Pulsars and Gravitational Waves Research
- High-pressure geophysics and materials
- Solid State Laser Technologies
- Advanced Fiber Laser Technologies
- Nuclear reactor physics and engineering
- Gamma-ray bursts and supernovae
- Quantum, superfluid, helium dynamics
- Photorefractive and Nonlinear Optics
- Laser-Matter Interactions and Applications
- Astronomical and nuclear sciences
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Cosmology and Gravitation Theories
- Radio Astronomy Observations and Technology
- Astro and Planetary Science
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Optical Systems and Laser Technology
- Simulation and Modeling Applications
- Advanced NMR Techniques and Applications
- Luminescence Properties of Advanced Materials
Tongji University
2005-2025
Shanghai Institute of Applied Physics
2015-2024
Chinese Academy of Sciences
2015-2024
Fujian Electric Power Survey & Design Institute
2024
Shanghai Advanced Research Institute
2018-2023
National Astronomical Observatories
2020-2023
University of Chinese Academy of Sciences
2023
AGH University of Krakow
2016-2019
Central China Normal University
2016-2018
Stony Brook University
2017
Expressing explicitly the parameters of standard Skyrme interaction in terms macroscopic properties asymmetric nuclear matter, we show Skyrme-Hartree-Fock approach that unambiguous correlations exist between observables finite nuclei and matter properties. We find existing data on neutron skin thickness $\ensuremath{\Delta}{r}_{\mathit{np}}$ Sn isotopes give an important constraint symmetry energy ${E}_{\mathrm{sym}}({\ensuremath{\rho}}_{0})$ its density slope $L$ at saturation...
Various kinds of isovector nucleon effective masses are used in the literature to characterize momentum/energy dependence symmetry potential or self-energy due space/time non-locality underlying strong interaction neutron-rich nucleonic matter. The multifaceted studies on multi-disciplinary nature. Besides structures, and low-lying excited states nuclei as well nuclear reactions, isospin short-range correlations from scatterings high-energy electrons protons heavy also help understand...
Analytical expressions for the saturation density of asymmetric nuclear matter as well its binding energy and incompressibility at are given up to fourth order in isospin asymmetry $\ensuremath{\delta}=({\ensuremath{\rho}}_{n}\ensuremath{-}{\ensuremath{\rho}}_{p})/\ensuremath{\rho}$ using 11 characteristic parameters defined by derivatives per nucleon symmetric matter, symmetry ${E}_{\mathrm{sym}} (\ensuremath{\rho})$, fourth-order ${E}_{\mathrm{sym},4}(\ensuremath{\rho})$ normal...
Within the parameter space of equation state (EOS) dense neutron-rich matter limited by existing constraints mainly from terrestrial nuclear experiments, we investigate how neutron star maximum mass $M_{\rm{max}}>2.01\pm0.04$ M$_\odot$, radius $10.62<R_{\rm{1.4}}< 12.83$ km and tidal deformability $\Lambda_{1.4}\leq800$ canonical stars all together constrain EOS nucleonic matter. While 3-D $K_{\rm{sym}}$ (curvature symmetry energy), $J_{\rm{sym}}$ $J_0$ (skewness energy symmetric matter,...
Transport simulations are very valuable for extracting physics information from heavy-ion collision experiments. With the emergence of many different transport codes in recent years, it becomes important to estimate their robustness We report on results a code comparison project. 18 commonly used were included this comparison: 9 Boltzmann-Uehling-Uhlenbeck-type and Quantum-Molecular-Dynamics-type codes. These have been required simulate Au+Au collisions using same input mean fields in-medium...
The multiplicity and elliptic flow of charged particles produced in Pb-Pb collisions at center mass energy $\sqrt{{s}_{\mathit{NN}}}=2.76$ TeV from the Large Hadron Collider are studied a multiphase transport (AMPT) model. With standard parameters HIJING model, which is used as initial conditions for subsequent partonic hadronic scatterings AMPT resulting final mid-pseudorapidity consistent with experimental data measured by ALICE Collaboration. This value is, however, increased about $25%$...
Simulations by transport codes are indispensable to extract valuable physics information from heavy ion collisions. In order understand the origins of discrepancies between different widely used codes, we compare 15 such under controlled conditions a system confined box with periodic boundary, initialized Fermi-Dirac distributions at saturation density and temperatures either 0 or 5 MeV. calculations, one is able check separately ingredients code. this second publication code evaluation...
We compare ten transport codes for a system confined in box, aiming at improved handling of the production $\Delta$ resonances and pions, which is indispensable constraining high-density symmetry energy from observables such as $\pi^-/\pi^+$ yield ratio heavy-ion collisions. The box initialized with nucleons saturation density 60 MeV temperature. reactions $NN\leftrightarrow N\Delta$ $\Delta\leftrightarrow N\pi$ are implemented, but Pauli blocking mean-field potential deactivated present...
Within the transport model evaluation project (TMEP) of simulations for heavy-ion collisions, mean-field response is examined here. Specifically, zero-sound propagation considered neutron-proton symmetric matter enclosed in a periodic box, at zero temperature and around normal density. The results several codes belonging to two families (BUU-like QMD-like) are compared among each other exact calculations. For BUU-like codes, employing test particle method, depend on combination number...
The transition density $\rho_{t}$ and pressure $P_{t}$ at the inner edge separating liquid core from solid crust of neutron stars are systematically studied using a modified Gogny (MDI) 47 popular Skyrme interactions within well established dynamical thermodynamical methods. It is shown that widely used parabolic approximation to full Equation State (EOS) isospin asymmetric nuclear matter may lead huge errors in estimating \rho_{t} P_{t}, especially for stiffer symmetry energy functionals...
Within both dynamical and thermodynamical approaches using the equation of state for neutron-rich nuclear matter constrained by recent isospin diffusion data from heavy-ion reactions in same sub-saturation density range as neutron star crust, pressure at inner edge separating liquid core solid crust stars are determined to be 0.040 fm$^{-3}$ $\leq ρ_{t}\leq 0.065$ 0.01 MeV/fm$^{3}$ P_{t}\leq 0.26$ MeV/fm$^{3}$, respectively. These together with observed minimum crustal fraction total moment...
We obtain a new set of parameters in multiphase transport (AMPT) model that are able to describe both the charged particle multiplicity density and elliptic flow measured $\mathrm{Au}+\mathrm{Au}$ collisions at center-of-mass energy $\sqrt{{s}_{NN}}=200$ GeV Relativistic Heavy Ion Collider, although they still give somewhat softer transverse momentum spectra. then use predict triangular due fluctuations initial collision geometry study its effect relative those from other harmonic components...
In the past two decades, pions created in high density regions of heavy ion collisions have been predicted to be sensitive at densities symmetry energy term nuclear equation state, a property that is key our understanding neutron stars. new experiment designed study energy, multiplicities negatively and positively charged measured with accuracy for central 132Sn+124Sn, 112Sn+124Sn, 108Sn+112Sn E/A=270 MeV SπRIT Time Projection Chamber. While individual pion are 4% accuracy, those...
Using the AMPT model for relativistic heavy ion collisions, we have studied di-hadron azimuthal angular correlations triggered by emitted jets in Au+Au collisions at center of mass energy $\sqrt{s_{NN}}=200$ GeV and impact parameter $b=8$ fm. A double-peak structure associated particles away side trigger is obtained after subtracting background due to elliptic flow. Both near-side peak away-side double peaks are, however, significantly suppressed (enhanced) events small (large) triangular...
Using a partonic transport model based on the 3-flavor Nambu--Jona-Lasinio and relativistic hadronic to describe, respectively, evolution of initial final phase heavy-ion collisions at energies carried out in beam-energy scan program BNL Relativistic Heavy Ion collider, we study effects both mean-field potentials elliptic flow particles relative that their antiparticles. We find reproduce measured differences between nucleons antinucleons as well kaons antikaons requires vector coupling...
We study the nuclear symmetry energy S(rho) and related quantities of physics astrophysics predicted generically by relativistic mean-field (RMF) Skyrme-Hartree-Fock (SHF) models. establish a simple prescription for preparing equivalent RMF SHF parametrizations starting from minimal set empirical constraints on symmetric matter, binding charge radii, enforcing equivalence their Lorenz effective masses, then using pure neutron matter (PNM) equation state (EoS) obtained ab-initio calculations...
Within the framework of a multiphase transport (AMPT) model that includes both initial partonic and final hadronic interactions, we show including mean-field potentials in phase leads to splitting elliptic flows particles their antiparticles, thus providing plausible explanation different between $p$ $\overline{p}$, ${K}^{+}$ ${K}^{\ensuremath{-}}$, ${\ensuremath{\pi}}^{+}$ ${\ensuremath{\pi}}^{\ensuremath{-}}$ observed recent Beam Energy Scan (BES) program at Relativistic Heavy-Ion Collider (RHIC).
With a newly improved isospin- and momentum-dependent interaction an isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model, we have investigated the effects of slope parameter $L$ nuclear symmetry energy isospin splitting nucleon effective mass $m_{n-p}^*=(m_n^*-m_p^*)/m$ on centroid isovector giant dipole resonance electric polarizability in $^{208}$Pb. isoscalar $m_s^*=0.7m$ constrained by empirical optical potential, obtain constraint $L=64.29\pm11.84 (\rm MeV)$ $m_{n-p}^*=...
We show that the yield ratio of free spectator neutrons produced in high-energy 96Zr+96Zr to 96Ru+96Ru collisions is a clean probe neutron-skin thickness colliding nuclei and slope parameter L symmetry energy. The idea demonstrated based on proton neutron density distributions via state-of-the-art Skyrme-Hartree-Fock-Bogolyubov calculation. Among nucleons given by Glauber model, include those from direct production survive clusterization as well deexcitation heavy clusters described popular...
We propose to use spectator particle yield ratios probe the configuration of α clusters in 12C and 16O by their ultracentral collisions at RHIC LHC energies. The idea is illustrated based on initial density distributions with various α-cluster configurations generated a microscopic cluster model, without from mean-field calculations. multifragmentation matter produces more light nuclei including chain structure clusters, compared those compact structure. ratio free neutrons particles...
Within the Transport Model Evaluation Project (TMEP), we present a detailed study of performance different transport models in $\text{Sn}+\text{Sn}$ collisions at $270A\phantom{\rule{4pt}{0ex}}\mathrm{MeV}$, which are representative reactions used to equation state suprasaturation densities. We put particular emphasis on production pions and $\mathrm{\ensuremath{\Delta}}$ resonances, have been as probes nuclear symmetry energy. In this paper, aim understand differences results codes for...
The nucleon spin polarization perpendicular to the reaction plane ($P_y$) and along beam direction ($P_z$) in Au+Au collisions at energy of 100A MeV with different nuclear spin-orbit interactions has been studied based on a spin- isospin-dependent Boltzmann-Uehling-Uhlenbeck (SIBUU) transport model. While is weaker coupling as intuitively expected, density-dependent enhances $P_y$ large rapidities leads less negative or high transverse momenta. difference free neutrons protons midrapidities...