CAJ | 학술논문

本文对Bjorken柱形夸克-胶子等离子体演化膨胀源进行了2π Hanbury-Brown-Twiss(HBT)干涉学分析.利用量子几率振幅的路径积分公式计算2π HBT关联函数并得到对膨胀和静态源的HBT半径.研究发现,在冻结发射情况下的HBT半径要明显大于没有考虑多重散射吸收情况下的结果,源的膨胀速度导致HBT半径变小.对相变温度宽度为零的Bjorken柱形源,膨胀速度的影响要小于对应的球形源的结果.
본문대Bjorken주형과극-효자등리자체연화팽창원진행료2π Hanbury-Brown-Twiss(HBT)간섭학분석.이용양자궤솔진폭적로경적분공식계산2π HBT관련함수병득도대팽창화정태원적HBT반경.연구발현,재동결발사정황하적HBT반경요명현대우몰유고필다중산사흡수정황하적결과,원적팽창속도도치HBT반경변소.대상변온도관도위령적Bjorken주형원,팽창속도적영향요소우대응적구형원적결과.
We examine the two-pion Hanbury-Brown-Twiss(HBT) interferometry for the expanding sources of quark-gluon plasma evolution with the Bjorken cylinder geometry. The two-pion HBT correlation functions are calculated using quantum probability amplitudes in a path-integral formalism and the HBT radius is extracted both for the expanding source and the static source.We find that the HBT radius for the freeze-out emission case is substantially greater than that for the case without absorption of multiple scattering. The expanding velocity of the source leads to a smaller HBT radius.The effect of expanding velocity for the Bjorken cylinder source with zero width of the transition temperature is smaller than those of the corresponding spherical source.