Nuclear Theory·nucl-th

Wednesday·July 25, 2018

5 papers—3 primary·2 cross-listed

01
Experimental results on fluctuations of conserved charges confronted with predictions from canonical thermodynamics
Peter Braun-Munzinger🇩🇪 · Anar Rustamov🇩🇪 · Johanna Stachel🇩🇪
The study of multiplicity distributions of identified particles in terms of their higher moments is at the focus of contemporary experimental and theoretical studies. In a thermalized system, combinations of these moments are directly related to the Equation of State (EoS). The ultimate goal of the experimental measurements in relativistic nuclear collisions is, by systematic comparison to QCD and QCD inspired calculations, to probe the dynamics of genuine phase transitions between a hadron gas and the quark-gluon plasma. However, the comparison between experiment and theory is far from trivial, because several non-dynamical effects on fluctuations need to be controlled prior to a meaningful comparison to theoretical predictions. In this report we present quantitative estimates for these non-dynamical contributions using the Canonical Ensemble (CE) formulation of statistical mechanics. Together with analytical formulas we provide also results from Monte Carlo (MC) simulations within the CE and compare our predictions with the corresponding measurements from the STAR experiment.
nucl-thNPA(2019)·28 citations
02
Effects of Finite Size of Constituent Quarks on Nucleon-Nucleon Interaction
Vanamali C. Shastry🇮🇳 · K. B. Vijaya Kumar (Mangalore University, India)🇮🇳
We have investigated the effect of the finite size of the constituent quarks on singlet and triplet nucleon-nucleon potentials, obtained in the framework of the $S U (2)$ nonrelativistic quark model using the resonating group method in the Born-Oppenheimer approximation. The full Hamiltonian used in the investigation includes the kinetic energy, two-body confinement potential, one gluon exchange potential (OGEP), and instanton induced interaction (III). The effects of the smearing of the contact interactions and the variation of the constituent mass of the quarks are discussed.
nucl-thJ.Phys.G(2019)·5 citations
03
Multi-nucleon transfer in $^{58} Ni +^{60} Ni$ and $^{60} Ni +^{60} Ni$ in stochastic mean-field approach
Bulent Yilmaz🇹🇷 · Sakir Ayik🇺🇸 · Osman Yilmaz🇹🇷 · A. Sait Umar🇺🇸
The multi-nucleon exchange mechanism in $^{58} Ni +^{60} Ni$ and $^{60} Ni +^{60} Ni$ collisions is analyzed in the framework of the stochastic mean-field approach. The results of calculations are compared with the TDRPA calculations and the recent data of $^{58} Ni +^{60} Ni$ . A good description of the data and a relatively good agreement with the TDRPA calculations are found.
nucl-thPRC(2018)·23 citations

Affiliations

first authorsco-authorsvia INSPIRE

Experimental results on fluctuations of conserved charges confronted with predictions from canonical thermodynamics

Effects of Finite Size of Constituent Quarks on Nucleon-Nucleon Interaction

Multi-nucleon transfer in 58Ni+60Ni and 60Ni+60Ni in stochastic mean-field approach

Affiliations

Multi-nucleon transfer in $^{58} Ni +^{60} Ni$ and $^{60} Ni +^{60} Ni$ in stochastic mean-field approach