2007/12/20 by Seung-il Nam, Nam, Seung-il, Hyun-Chul Kim +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.0712.3346
4 pages, 2 figures, Talk given at the workshop Strangeness in multi-quark systems which was held during 26~28 November, 2007 in Sendai, Japan
arxiv created 2007/12/20 · openalex publication_date 2007/12/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this talk, we introduce an effective chiral action, derived from the instanton QCD vacuum configuration, in order to study the modification of mesonic properties in medium. We present our recent theoretical results on the electromagnetic from factor and rho-meson mass shift at finite density. We observe that the rho-meson mass is dropped by about 10%: m*rho/mrho ~ 1-0.12 muB/mu0, which is compatible with that estimated by the QCD sum rule as well as by Brown and Rho.