导热系数的微观模型
Thermal Conductivity Coefficient from Microscopic Models
摘要：
利用微观输运模型研究了强子物质的热导率，该模型将用于模拟不同能量密度下的超相对论重离子碰撞，即超相对论量子分子动力学（UrQMD）.本文用分子动力学模拟方法模拟了在周期边界条件下的盒子中的轻介子（π介子、ρ介子、K介子）系统。通过对体系化学平衡和热平衡的研究，探讨了体系的平衡态。粒子多重性随时间平衡，当达到热平衡时，不同轻介子种类的能谱具有相同的斜率和共同的温度。热导率输运系数由热流-电流关联式使用Green-Kubo关系式计算。
英文摘要：
Thermal conductivity of hadron matter is studied using a microscopic transport model, which will be used to simulate ultra-relativistic heavy ion collisions at different energy densities, namely the Ultra-relativistic Quantum Molecular Dynamics (UrQMD). The molecular dynamics simulation is performed for a system of light mesons species (pion, rho, kaon) in a box with periodic boundary conditions. The equilibrium state is investigated by studying chemical equilibrium and thermal equilibrium of the system. Particle multiplicity equilibrates with time, and the energy spectra of different light mesons species have the same slopes and common temperatures when thermal equilibrium is reached. Thermal conductivity transport coefficient is calculated from the heat current - current correlations using the Green-Kubo relations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
