2004/05/31 by Hiroaki Kouno, H. Kouno, Yasushi Horinouchi +3
Physics and Astronomy · #Baryon #Effective field theory #Effective mass (spring–mass system) #Equation of state #Hadron #High-Energy Particle Collisions Research #Mass formula #Mean field theory #Nuclear matter #Pulsars and Gravitational Waves Research #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.1143/ptp.112.831
published as Prog.Theor.Phys. 112 (2004) 831-854 · 26pages,10 figures; minor corrections,typos added, references added, added new discussions for summary (section 6)
arxiv created 2004/08/27 · openalex publication_date 2004/11/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Relations among the effective hadron masses and the effective interactions in nuclear matter are studied by using the generalized relativistic mean field theory. We found that we can make the effective omega-meson mass smaller and the equation of state softer if we require that the omega-meson mean field is proportional to the baryon density. In this case, there is a simple and exact relation between the effective omega-meson mass and the effective omega-nucleon coupling. Because of this relation, the effective omega-nucleon coupling automatically decreases if the effective omega-meson mass decreases. Consequently, the equation of state becomes softer. A trial to embed the QCD sum-rule results into the hadron field theory is also shown.