Transport Theory with Bose-Einstein Statistics for RHIC and Investigations of Novel Properties of Dense Neutron-Rich Matter

RHIC 的玻色-爱因斯坦统计输运理论和致密富中子物质的新特性研究

• 批准号: 0243571
• 负责人: Bao-An Li
• 金额: $ 1.5万
• 依托单位: Arkansas State University Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0243571&HistoricalAwards=false
• 关键词: Transport; Theory; Bose; Einstein; Statistics

In this RUI (Research in Undergraduate Institutions) renewal proposal, the PIproposes to undertake two new projects, i.e., (1) development and application of atransport theory with Bose-Einstein statistics for ultra-relativistic heavy-ion collisionsat Brookhaven's Relativistic Heavy-Ion Collider (RHIC) and (2) investigations of nov-el properties of dense neutron-rich matter with energetic radioactive beams. The largenumber of pions produced and thus the high value of pion phase-space density reachedin heavy-ion collisions at RHIC requires a proper inclusion of the Bose-Einstein s-tatistics (multi-boson symmetrization) in the reaction dynamics. The Bose-Einsteinstatistics is currently neglected in essentially all dynamical models for RHIC. Thefocus of the PI's work on the first project is to include the Bose-Einstein statisticsin both the hadronization and the subsequent dynamical evolution of hadrons, mostimportantly pions, within a multi-phase transport model. The transport theory withBose-Einstein statistics will be a useful tool for predicting reliably and interpretingcritically nuclear collision data at RHIC, especially the single-particle spectra, multi-particle correlation functions and the collective ow of pions. It might also beusefulfor solving the Hanbury Brown/Twiss (HBT) puzzle found in experiments at RHIC.The ultimate goals of the second project are to determine accurately the isospindependence of the nuclear equation of state (EOS) and to investigate novel propertiesof dense neutron-rich matter that was not in reach in terrestrial laboratories before.These are important issues identified in the most recent U.S. long-range plan (LRP)for nuclear physics and foundamental properties that govern many aspects of neutronstars. To extract crucial information about the isospin-dependence of the nuclearEOS, the PI proposes to investigate several experimental observables in nuclear reac-tions induced by energetic neutron-rich nuclei at existing radioactive beam facilitiesand the future Rare Isotope Accelerator, identified as the top priority for new con-struction in the U.S. LRP for nuclear physics. Moreover, several novel propertiesof dense neutron-rich matter will be explored. These include the isospin separationinstability, the unique 0

在这个RUI（本科院校研究）更新建议中，PI建议进行两个新项目，即，(1)在布鲁克海文的相对论重离子对撞机（RHIC）上发展和应用了超相对论重离子碰撞的玻色-爱因斯坦统计输运理论;（2）用高能放射性束研究稠密丰中子物质的新性质。在RHIC重离子碰撞中产生的大量π介子以及由此获得的高π介子相空间密度值要求在反应动力学中适当地包含玻色-爱因斯坦s统计（多玻色子对称化）。玻色-爱因斯坦统计量目前在RHIC的所有动力学模型中基本上都被忽略了。PI在第一个项目中的工作重点是在强子化和随后的强子（最重要的是π介子）动力学演化的多相输运模型中包括玻色-爱因斯坦近似。玻色-爱因斯坦统计的输运理论将是可靠地预测和解释RHIC临界核碰撞数据，特别是单粒子谱、多粒子关联函数和π介子集体流的有用工具。第二个项目的最终目标是精确地确定核状态方程（EOS）的同位旋独立性，并研究地球实验室以前无法达到的稠密丰中子物质的新性质，这些都是美国最近的长期计划（LRP）中确定的重要问题。核物理学和基本性质，这些性质支配着中子星的许多方面。为了提取有关核状态方程的同位旋依赖性的关键信息，PI建议在现有的放射性束设施和未来的稀有同位素加速器上研究高能丰中子核引起的核反应中的几个实验观测值，这被确定为美国LRP核物理新建设的首要任务。此外，还将探索致密富中子物质的几种新性质。这些包括同位旋分离不稳定性，独特的0