Lee-Yang zeros and QCD Phase structure -- Unified Approach of Experiments, Theories and Numerical Analyses

2016 Fiscal Year Final Research Report

• Project/Area Number: 26610072
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Osaka University (2015-2016); Hiroshima University (2014)
• Principal Investigator: Nakamura Atsushi 大阪大学, 核物理研究センター, 協同研究員 (30130876)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: QCD / 格子ゲージ理論 / 高エネルギー重イオン反応 / 相転移 / 多倍長計算

Outline of Final Research Achievements

In order to study the QCD phase structure, we have　determined the canonical partition fuction both from　high energy heavy ion collisions and the lattice QCD.
Using these canonical partition functions we have　calculate the Lee-Yang zeros in both　experimental　and numerical approaches.　In these studies, we have developed a new algorithm　to obtain zeros of high order polynomical functios　with multi-precision calculations.
We show regions where experiments should pursuefor detecting the QCD phase transition.

Free Research Field

原子核物理学