Extended soft wall model with background related to features of QCD thermodynamics

2017/01/14 by Rico Zöllner, R. Zöllner, B. Kämpfer +1 · 1 citation
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Baryon #Hadron #High-Energy Particle Collisions Research #Meson #Quantum chromodynamics #Theoretical and Computational Physics #Vector meson #Vector meson dominance #hep-ph #hep-th

paper · pdf · doi:10.1140/epja/i2017-12328-0

published as Eur. Phys. J. A 53, 139 (2017)

arxiv created 2017/01/14 · openalex created_date 2017/02/03 · openalex publication_date 2017/06/01 · arxiv updated 2017/08/16 · openalex updated_date 2026/08/05

Abstract

The soft wall model is extended to accommodate at the same time (i) approximately linear ρ meson Regge trajectories at zero temperature T, (ii) various options for the thermodynamics with reference to QCD (cross over or second-order transition or first-order transition at T_c), and (iii) the appearance of vector meson states at T ≤ T_c. While the vector meson masses display some modest model dependence very near to T_c, they stay below T_c to good accuracy independent of the temperature, that is nearly as at T=0, thus being very consistent with the thermo-statistical models widely employed in analyses of the hadron yields in relativistic heavy-ion collisions in a region where baryon densitiy effects can be neglected and the vacuum hadron masses are used.

Citations

• Chiral symmetry breaking in the soft-wall AdS/QCD model
• Holography, heavy-quark free energy, and the QCD phase diagram
• Centrality dependence of thermal parameters deduced from hadron multiplicities inAu+Aucollisions atsNN=130 GeV
• Hadrons in strongly interacting matter
• The phase diagram of nuclear and quark matter at high baryon density
• Mesons from global anti-de Sitter space
• The large N limit of superconformal field theories and supergravity

Cited by

• Chiral phase transition at finite chemical potential in 2+1-flavor soft-wall anti–de Sitter space QCD