双轻子产生的反常增强是色超导的前兆
Anomalous enhancement of dilepton production as a precursor of color superconductivity
摘要：
通过Aslamasov-Larkin、Maki-Thompson和态密度项计算了在色超导临界温度附近双夸克动力学涨落对光子自能的影响，这些项是导致金属在能量和动量为零时的亚导电性的原因.结果表明，在正常相，在较宽的温度范围内，在低不变质量区，该速率有显著的增强。这种增强在相对论性重离子碰撞中是值得探索的，从而可能揭示重夸克物质中双夸克涨落的意义。
英文摘要：
We compute the modification of the photon self-energy due to dynamical diquark fluctuations developed near the critical temperature of the color superconductivity through the Aslamasov-Larkin, Maki-Thompson and density of states terms, which are responsible for the paraconductivity in metals at vanishing energy and momentum. It is shown that the rate has a significant enhancement at low invariant-mass region over a rather wide range of temperature in the normal phase. This enhancement is worth exploration in the relativistic heavy-ion collisions, which may thereby reveal the significance of the diquark fluctuations in dense quark matter.
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