论文标题
部分可观测时空混沌系统的无模型预测
Soft gluon emission from heavy quark scattering in strongly interacting quark-gluon plasma
论文作者
论文摘要
我们将Low的定理应用于非扰动强烈相互作用的Quark-Gluon等离子体（SQGP）中的重夸克散射中的软gluon发射。用动力学的准颗粒描述了SQGP，并在有限温度和化学势下调整了LQCD的EOS。由于发射的gluon柔软并且具有长波长，因此它不提供有关散射详细结构的信息，并且只有传入和外向的部分发射就足够了。它简化了计算，使散射幅度可将弹性散射和软gluon的发射分解。对发射的Gluon能量施加适当的上限，我们在QGP中获得了与介质的巨大部分以及它们的传输系数（动量阻力和扩散），并与弹性散射相比而没有GLUON发射。
We apply the Low's theorem to soft gluon emission from heavy quark scattering in the nonperturbative strongly interacting quark-gluon plasma (sQGP). The sQGP is described in terms of the dynamical quasi-particles and adjusted to reproduce the EoS from lQCD at finite temperature and chemical potential. Since the emitted gluon is soft and of long wavelength, it does not provide information on the detailed structure of the scattering, and only the emission from incoming and outgoing partons is enough. It simplifies the calculations making the scattering amplitude factorizable into the elastic scattering and the emission of soft gluon. Imposing a proper upper limit on the emitted gluon energy, we obtain the guage-invariant scattering cross sections of heavy quarks with the massive partons of the medium as well as their transport coefficients (momentum drag and diffusion) in the QGP and compare with those from the elastic scattering without gluon emission.
