CAJ | 학술논문

本文对球形演化的夸克-胶子等离子体膨胀源进行了2π干涉学分析.夸克-胶子等离子体的演化由相对论流体力学和熵密度的物态方程描述,而2πHanbury-Brown-Twiss(HBT)关联函数由量子几率振幅的路径积分公式计算.研究结果表明,由2π干涉学得到的源的空间参量敏感地依赖于π介子发射源的相空间分布,源的膨胀速度导致HBT半径变小,并会改变HBT半径与冻结温度之间的关系.
본문대구형연화적과극-효자등리자체팽창원진행료2π간섭학분석.과극-효자등리자체적연화유상대론류체역학화적밀도적물태방정묘술,이2πHanbury-Brown-Twiss(HBT)관련함수유양자궤솔진폭적로경적분공식계산.연구결과표명,유2π간섭학득도적원적공간삼량민감지의뢰우π개자발사원적상공간분포,원적팽창속도도치HBT반경변소,병회개변HBT반경여동결온도지간적관계.
We examine the two-pion interferometry for the expanding sources of spherical quark-gluon plasma evolution. The quarkgluon plasma evolution is described by relativistic hydrodynamics with the equation of state of entropy density. The two-pion HanburyBrown-Twiss (HBT) correlation functions are calculated using quantum probability amplitudes in a path-integral formalism. We find the spatial parameter extracted by the two-pion interferometry is sensitive to the phase-space distribution of the pion-emitting source.The expanding velocity of the source leads to a smaller HBT radius and changes the relationship between the HBT radius and the freeze-ont temperature.