Nuclear Theory·nucl-th

Wednesday·August 22, 2018

4 papers—3 primary·1 cross-listed

01
Multi-phase transport model predictions of isobaric collisions with nuclear structures from density functional theory
Hanlin Li🇨🇳 · Hao-jie Xu🇨🇳 · Jie Zhao🇺🇸 · Zi-Wei Lin🇨🇳 · Hanzhong Zhang🇨🇳 · Xiaobao Wang🇨🇳 · Caiwan Shen🇨🇳 · Fuqiang Wang🇨🇳
Isobaric $_{44}^{96}$ Ru+ $_{44}^{96}$ Ru and $_{40}^{96}$ Zr+ $_{40}^{96}$ Zr collisions were performed at the Relativistic Heavy Ion Collider in 2018. Using the "a multi-phase transport" model with nuclear structures calculated by the density functional theory (DFT), we make predictions for the charged hadron multiplicity distributions and elliptic azimuthal anisotropies in these collisions. Emphases are put on the relative differences between the two collision systems that can decisively discriminate DFT nuclear distributions from the commonly used Woods-Saxon densities.
nucl-thnucl-exPRC(2018)·55 citations
02
SMASH -- A new hadronic transport approach
Hannah Petersen🇩🇪 · Dmytro Oliinychenko🇺🇸 · Markus Mayer🇩🇪 · Jan Staudenmaier🇩🇪 · Sangwook Ryu🇩🇪
Microscopic transport approaches are the tool to describe the non-equilibrium evolution in low energy collisions as well as in the late dilute stages of high-energy collisions. Here, a newly developed hadronic transport approach, SMASH (Simulating Many Accelerated Strongly-interacting Hadrons) is introduced. The overall bulk dynamics in low energy heavy ion collisions is shown including the excitation function of elliptic flow employing several equations of state. The implications of this new approach for dilepton production are discussed and preliminary results for afterburner calculations at the highest RHIC energy are presented and compared to previous UrQMD results. A detailed understanding of a hadron gas with vacuum properties is required to establish the baseline for the exploration of the transition to the quark-gluon plasma in heavy ion collisions at high net baryon densities.
nucl-thhep-phnucl-exNPA(2019)·45 citations
03
Anisotropic hydrodynamics with number-conserving kernels
D. Almaalol🇺🇸 · M. Alqahtani🇸🇦 · M. Strickland🇺🇸
We compare anisotropic hydrodynamics (aHydro) results obtained using the relaxation-time approximation (RTA) and leading-order (LO) scalar \lambda \phi^4 collisional kernels. We extend previous work by explicitly enforcing number conservation through the incorporation of a dynamical chemical potential (fugacity) in the underlying aHydro distribution function. We focus on the case of a transversally homogenous and boost-invariant system obeying classical statistics and compare the relevant moments of the two collisional kernels. We then compare the time evolution of the aHydro microscopic parameters and components of the energy-momentum tensor. We also determine the non-equilibrium attractor using both the RTA and LO conformal \lambda \phi^4 number-conserving kernels. We find that the aHydro dynamics receives quantitatively important corrections when enforcing number conservation, however, the aHydro attractor itself is not modified substantially.
nucl-thhep-phPRC(2019)·16 citations

Affiliations

first authorsco-authorsvia INSPIRE

Multi-phase transport model predictions of isobaric collisions with nuclear structures from density functional theory

SMASH -- A new hadronic transport approach

Anisotropic hydrodynamics with number-conserving kernels

Affiliations